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In attempts to meet the need for low‐loss materials capable of attaining the dielectric properties that are required for rapidly developing microwave and high speed digital equipment, polysulphone in its various forms has been undergoing investigation. Microwave dielectric properties are examined with respect to temperature and frequency, and three types of polysulphone are studied in depth, with testing for dielectric constant and dissipation factor. The material's physical properties are listed prior to advisory comments on special processing requirements. Its feasibility in multilayer production is currently being researched.

The purpose of this study is to investigate whether biotechnology and health-care firms in Australia have poorer continuous disclosure (CD) practices as reflected in Australian Securities Exchange (ASX) queries relative to other firms.

Univariate tests and multivariate logit regressions are used to examine whether the frequency and nature of ASX queries and firms’ replies to price queries differ between biotechnology/health-care firms and the control firms.

Results suggest that biotechnology/health-care firms are more likely to receive volume queries and ASX Listing Rule 4.10 queries. They are also more likely to respond to price queries with new information relative to the control firms. However, biotechnology/health-care firms do not otherwise have statistically significantly different CD practice compared to the control firms, as reflected by the frequency and attributes of various types of ASX queries and by the way firms reply to price queries.

Evidence from this study can help evaluate the adequacy and enforcement of CD requirements and the need for further improvement. Investors can also use the evidence to better understand the information risks associated with investment in the biotechnology/health-care industry.

Prior research has not used multivariate methods to examine biotechnology/health-care firms’ CD practice in Australia or to examine accounting determinants of different types of ASX queries and firms’ responses to price queries.

Sir Raymond Streat, C.B.E., Director of The Cotton Board, Manchester, accompanied by Lady Streat. A Vice‐President: F. C. Francis, M.A., F.S.A., Keeper of the Department of Printed Books, British Museum. Honorary Treasurer: J.E.Wright. Honorary Secretary: Mrs. J. Lancaster‐Jones, B.Sc., Science Librarian, British Council. Chairman of Council: Miss Barbara Kyle, Research Worker, Social Sciences Documentation. Director: Leslie Wilson, M.A.

THE IFLA Conference—or to be more precise—the 34th Session of the General Council of IFLA—met at Frankfurt am Main from the 18th to the 24th of August, 1968. Note the dates, for they include the 21st of August, the day when the delegates heard, as did the rest of the world, of the invasion of Czechoslovakia. Until then the Conference had been proceeding happily, and with the smoothness inborn of German organisation. During and after that date, a blight was cast over the proceedings, and although the Conference carried out its formal and informal programmes as planned, concentrations were disturbed as delegates sometimes gathered round transistor radios, their thoughts on Eastern Europe.

The 28th annual conference of Aslib, held at Nottingham University from 11th to 14th September, 1953, proved to be the largest that Aslib has so far organized. A list of those present is printed on pp. 254–260. Yet again Aslib was glad to be able to welcome a number of overseas guests and members, including Dr. and Mrs. Lancour and their small daughter from the U.S.A., Drs. and Mrs. van Dijk and Miss Rom from the Netherlands, Mr. M. S. Dandekar and Mr. J. V. Karandikar from India, Miss D. M. Leach from Canada, and Mrs. T. Collin from Norway. Mr. Walter A. Southern, a Fulbright scholar from the U.S.A. affiliated to Aslib during his year's study in the United Kingdom, represented the Special Libraries Association, and Mr. J. E. Holmstrom attended as an observer on behalf of Unesco.

This paper aims to examine whether firms with high information asymmetry disclose more information under a continuous disclosure regime, and, second, the paper examines whether continuous disclosures reduce information asymmetry.

The study models relations between continuous disclosures and information asymmetry using ordinary least squares regression and two-stage least squares regression.

The study finds firms with high information asymmetry disclose more information. Further, the study finds that disclosure in the presence of high information asymmetry increases asymmetry. Finally, while bad news increases information asymmetry, the disclosure of firm-specific good and bad news is associated with reduced information asymmetry.

The paper identifies conditions under which Continuous Disclosure Regime increases information in markets and influences information asymmetry.