Structure and Dynamics of Social Intervention By Gary Spencer Books / Paperback Social Science › Psychology & Psychiatry Publisher: Heath Lexington Books, January 1970 Price $12.51 Free Shipping Send to a friend Used - Good Good condition. Stamped on front inside cover. Card pocket on rear inside cover. $12.51 1 in Stock at Warehouse Quantity Add Free Shipping to continental U.S. OR $1.00 per item discount if shipped to store.