Excerpts from the report: The 1951-52 survey of farmers' marketing, purchasing, and related service cooperatives showed substantial increases in number, membership, and dollar volume of these associations. Total number of associations increased from 10,051 in 1950-51 to 10,166 in 1951-52, representing a gain of 1.1 percent. Membership increased from 7.1 million to 7.4 million -- an increase of about 4 percent. Gross dollar volume rose from $10.5 billion to $12. 1 billion, slightly more than a 15 percent increase.