Manual for milk and cream testers and laboratory technicians ...
APA Citation
Wilster, G. H. (Gustav Hans). (1945). Manual for milk and cream testers and laboratory technicians ... Corvallis, Ore.: OSC cooperative association.
MLA Citation
Wilster, G. H. (Gustav Hans), 1893-. Manual for Milk And Cream Testers And Laboratory Technicians ... Corvallis, Ore.: OSC cooperative association, 1945.
Warning: These citations may not always be complete (especially for serials).