The 600,000 U. S. dairy farms carry on an industry whose annual output is almost equal in value to that of petroleum and runs automobiles a close race. Its gross revenue of a billion and a half dollars exceeds that for all grains and vegetables combined, accounts for more than a quarter of total U. S. farm income. Its $7,000,000,000 worth of land, buildings and herds make it the No. 1 cash venture in agriculture. For cooking, drinking, canning, butter, cheese its 26,000,000 cows yield a hundred billion pounds of milk every year....
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