{"identifier":"nobleid:/w1/20260522/7A552B68","arkIdentifier":"ark:/48914/w1/20260522/7A552B68","version":1,"workTitle":"Sources of variance affecting dairy herd fertility and delayed returns to service.","workType":"Journal Article","authors":"D Olds, L D Colvin, T Cooper, O W Deaton","description":null,"workUrl":null,"existingDoi":"10.3168/jds.S0022-0302(66)87999-7","createdAt":"2026-05-22T18:12:26.828904Z","canonicalUrl":"https://nobleid.org/ark:/48914/w1/20260522/7A552B68.v1"}