OCCUPATIONAL DISEASES

Headache Book Minirth Frank Flying Without Wings Beisser Arnold R. California Plant Disease Handbook and Study Guide for Agricultural Pest Control Advisors Gubler, Walter D. What is Allergy? Benack, Raymond T. Rare Fruiy Council Waston, B.J. National Directory of Plant Pathologists Ahmad, Iftikhar Biological Control of Pests by Mites Biological Control of Pests by Mites;: Proceedings of a Conference helf April 5-7, 1982 ;Edited by Marjorie A. Hoy, Gary L. Cunningham and /Lloyd Knuston Mite management manual Bower, C. C