na INLIS000000000003030 Ind 0010-1118003030 Studies on fertility in dairy cattle based on analysis of AI data JANSEN, J. J. Jansen Wageningen Landbouwuniversiteit 1986 81 p. : ills. ; 24 cm. 81 p. : ills. ; 24 cm. 636JANs Thesis (Dr.)-Landbouwuniversiteit te Wageningen, 1986. 636.2 DAIRY CATTLE FERTILITY 197/DTS/88