TY  - BOOK
AU  - Owen, J. B.
TI  - Perfomance recording in sheep
T2  - Commonwealth Bureau of Animal Breeding and Genetics. Technical Communication
U1  - 636.3 
PY  - 1971///
CY  - Slough, England
PB  - Commonwealth Agricultural Bureaux
KW  - Ganado lanar
KW  - Hábitos y conducta
ER  -