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- [7] GENETIC AND ENVIRONMENTAL INFLUENCE ON YIELD IN 305 DAYS/2 LACTATION IN DANISH BLACK PIED CATTLE AND RED DANISH CATTLE HEREDITAS-GENETISKT ARKIV, 1971, 69 (02): : 289 - &
- [8] GENETIC ANALYSIS OF 305-DAY YIELD IN SECOND LACTATION IN RED DANISH CATTLE AND BLACK PIED DANISH CATTLE ANIMAL PRODUCTION, 1973, 16 (FEB): : 17 - 29