1. Responses of cows to daily injections of recombinant bovine somatotropin (BST) during a second consecutive lactation;Annexstad;J. Dairy Sci.,1987
2. Official methods of analysis,1980
3. Overall efficacy of chronically administered recombinant bovine somatotropin (rbST) to lactattng daily cows;Burton;J. Dairy Sci.,1990
4. Effects of supplemental somatotropin for two lactations on responses of cows in a commercial dairy;Chalupa;J. Dairy Sci.,1989
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