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The Description, Measurement, and Economic Assesment of the Contribution of Veterinary Service to Large Scale Dairy Operations in California

The coefficient estimates significant at either the 5% (2 tailed t-test) or 5% (1
tailed t-tes t ) signific ance level are : her d size, WES DUM, and management in
the "days open" function; herd size, feed, WESDUM, and cull policy in the "days
in ...