Milk recording-A practical method described
Hietink, J.
Milk recording-A practical method described - Solisbury 1963 - 1-4 p. - Milk Federal Ministry of Agriculture. Bulletin No. 2229 .
Milk recording-A practical method described - Solisbury 1963 - 1-4 p. - Milk Federal Ministry of Agriculture. Bulletin No. 2229 .