[Determination of the onset and duration of the first stage of labor in German Holstein-Friesian cattle].
Dtsch Tierarztl Wochenschr, 1978/4/05;85(4):130-2.
Gregory RM, Giese W, Grunert E
PMID: 346341
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Dtsch Tierarztl Wochenschr, 1978/4/05;85(4):130-2.
Gregory RM, Giese W, Grunert E
PMID: 346341