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2. California Department of Agriculture. 1964. California Milk Stabilization Laws. California Office of State Printing, Sacramento.
3. Engvall, W.L. 1966. Self-feeding wafer barn. AXT-179. Univ. of Calif. Agr. Ext. Ser.
4. Holtz, E.W., B., B., Curley, G.S., Goble. 1967. Individual-stall housing for dairy cattle. AXT-233. Univ. of Calif. Agr. Ext. Ser.
5. Corn silage and alfalfa hay for lactating dairy cows;Hutton;California Agr.,1967