This second edition was compiled from questionnaires distributed by regulatory officials to registered manufacturers in later 1976 and early 1977. It includes dry and fluid blenders, granulators, and some retail outlets. A total of 7,150 listings is shown - an increase of 9% over the 1974 survey.

The 1980 Directory of Fertilizer Plants in the United States is the third edition compiled by the Association of American Plant Food Association (AAPFCO) and the National Fertilizer Development Center (NDFC). This latest directory represents the most comprehensive listing available of the retail segment of the fertilizer industry.

This Directory lists 1425 recent and current fertilizer projects concerned with agronomic, economic, and marketing research in the United States, Puerto Rico, and the Virgin Islands.

The Fertilizer Manual, 3rd Edition, is a new, fully updated, comprehensive reference on the technology of fertilizer production. The manual contains engineering flow diagrams and process requirements for all major fertilizer processes including ammonia, urea, phosphates, potassium products and many others. Environmental considerations are addressed clearly. Equally important, the manual includes chapters on fertilizer use, production and distribution economics, raw materials, and the status of the fertilizer industry with demand-supply projections. Professionals involved with any phase of fertilizer production, use, marketing, or distribution will find this book valuable.