TY  - SER
AU  - Queiroz,S.A.de
AU  - Ramos,A.A.
AU  - Giannoni,M.A.
AU  - Giannoni,M.L.
TI  - Environmental effects on the variation of productive traits in holstein-friesian x zebu cross-bred cattle in the region of Sao Carlos, state of Sao Paulo, Brazil. 2. Lactation length
KW  - LACTACAO
KW  - GADO MESTICO
KW  - SAO CARLOS
KW  - SAO PAULO
ER  -