This publication includes seminar papers presented and discussed by staff members of Iowa State University during the winter quarter of 1959. The seminar was sponsored by the Center for Agricultural and Economic Adjustment and met for two hours per week over a period of nearly three months. The seminar was organized to include a group of about 70 members designated by the committee listed below. The formal seminar group discus sed each paper after its presentation. The papers were revised in line with these discussions by the seminar group and recommendations by the seminar committee.</p
