00320nam a2200121Ia 4500008004100000020001500041082002200056100001500078245004400093260003200137300000800169650002100177140316s9999 xx 000 0 und d a0851989284 a636.20824bGOR/LA aGordon,Lan aLaboratory production of cattle embryos aUKbCAB internationalc1994 a640 aAnimal husbandry