Gordon Hayes says: >>The book is entitled, "Insect Pollination of Cultivated Crop Plants" Agriculture Handbook No. 496 Agricultural Research Service, USDA, written by S.E. McGregor in 1976. >>If you (or anyone reading this) knows where I might get a copy of this book I would be very appreciative. Try your congressmen. They get free copies for distribution, and I have gotten several publications that way, including one that was out of print. I haven't done it in a long time, but I presume it's still a policy. I have a copy, if you have specific questions. Sadly, it is, as you say, out of print, but also out of date, and we really need a new work that takes into account the drastic changes that have occurred in pollination field. [log in to unmask] Dave Green Eastern Pollinator Newsletter, PO Box 1215, Hemingway, SC 29554