TY  - BOOK
AU  - Tomes, G. L.
AU  - Lightfoot, R. J.
AU  - Robertson, D. E.
TI  - Sheep breeding
T2  - Studies in the agricultural and food sciences
U1  - 636.3 
PY  - 1979///
CY  - London
PB  - Butterworths
KW  - Ganado lanar
KW  - Cría de
ER  -