Persistency of lactation in dairy cows
Subtitle: a preliminary study of certain Guernsey and Holstein records
By: by W.L. Gaines.
Series: Bulletin (University of Illinois (Urbana-Champaign campus). Agricultural Experiment Station) -- no. 288; Bulletin (University of Illinois (Urbana-Champaign campus). Agricultural Experiment Station) -- no. 288.
Publisher: University of Illinois Agricultural Experiment Station
Published: 1927
Place of publication: Urbana, Ill
Subjects: Milk yield; Lactation