mm“ WW HIWHWW 300809 0312 Michigan State University This is to certify that the dissertation entitled ENDOGENOUS ESTROGENS AND DEVELOPMENT OF SEXUAL BEHAVIOR IN THE FEMALE RAT (RATTUS NORVEGICUS) presented by Jeffrey Alan Witcher has been accepted towards fulfillment of the requirements for Ph D degree in Zoology V éa xMZWzQ 514624-14 J . / Major professor Date August 12, 1982 MS U is an Affirmative Action/Equal Opportunity Institution 0-12771 MSU LIBRARIES .—:—. RETURNING MATERIALS: Place in book drop to remove this checkout from your record. FINES will be charged if book is returned after the date stamped below. r ‘ as #37?“ 'i 7 l! 5.1. i' r. . ‘t I; - a ' Ilia-1 Pi ',