Hay, Deborah, : Special educational needs and the law / by John Friel and Deborah Hay.
Hay, Deirdre L. : Unilateral effects from mergers of firms offering differentiated products : Australia and the United States compared / by Deirdre L. Hay.
Hay, Deirdre Liddell. : A comparative analysis of unilateral effects from mergers of firms offering differentiated products : Australia and the United States / by Deirdre Liddell Hay.
Hay, Delynn R. : Planning now for irrigation and drainage in the 21st century : proceedings of a conference : Lincoln, Nebraska, July 18-21, 1988 / sponsored by the Irrigation and Drainage Division of the American Society of Civil Engineers ; co-sponsored by the Nebraska Section, ASCE, in cooperation with the American Society of Agricultural Engineers ... [and others] ; edited by DeLynn R. Hay.
Hay E, Dziedzic K, Foster N. : Optimal primary care management of clinical osteoarthritis and joint pain in older people [electronic resource] : a mixed-methods programme of systematic reviews, observational and qualitative studies, and randomised controlled trials / Hay E, Dziedzic K, Foster N, ... [et. al.].