au.\*:("BUTLER JG")
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ESTROUS RESPONSE OF EARLY POSTPARTUM BEEF HEIFERS TO PROGESTERONE AND ESTRADIOL-17BETA DURING RESTRICTED DIETARY ENERGYWILLIAMS GL; BUTLER JG; RAY DE et al.1980; THERIOGENOLOGY; USA; DA. 1980; VOL. 14; NO 1; PP. 13-20; BIBL. 24 REF.Article