Sir/Madam, Kindly forward the article if available with you Oestrous behaviour and ovarian activity of crossbred heifers Rao, S.V. and Rao, A.R. 1981. Indian Veterinary journal , 58: 881-884. Regards *Mohanalal E.K. MLIS, MPhil.*Librarian College of Veterinary and Animal Sciences Kerala Veterinary and Animal Sciences University Pookode, Lakkidi (P O), Wayanad - 673576 Kerala , INDIA *e-mail: lallu2007@gmail.com , libvetpkt@kvasu.ac.in * *Ph: +919495464972, 04936256953* -- This message has been scanned for viruses and dangerous content by MailScanner, and is believed to be clean.