Directing the cooperative extension service, selected papers present ed at seventh National Cooperative Extension Administration Seminar, Ma dison, Wisensin, April 30-May 4th, 1962 - National cooperative Extension Administrative seminar, 7th Universit y of Wisconsin, 1962; Clark, Robert C./b 11 Rulston, N.P.; Agricultural extension work. (Madison : National Agricultural Extension Center, University of W isconsin, 1962)