01222nam a2200289Ia 4500 20813 BIBL 20160527194320.0 681122s1968 nyua b 00110 eng 68008663 EVLG 374.473 M157 c1-2 LC5951 .M3 1968 374/.473 374.473 M157 MacKenzie, Ossian. Local 129227 Correspondence instruction in the United States a study of what it is, how it functions, and what its potential may be Ossian MacKenzie, Edward L. Christensen [and] Paul H. Rigby. New York McGraw-Hill [1968] xv, 261 p. illus. The Carnegie series in American education Local 178375 Study sponsored by the American Council on Education and the National Commission on Accrediting. Bibliography: p. 59-63. Correspondence schools and courses United States. Local 81059 Christensen, Edward L. joint author. Local 73031 Rigby, Paul H. joint author. Local 159576 American Council on Education. Local 52082 National Commission on Accrediting. Local 141205 15048 15048 0 0 0 374_473000000000000_M157 0 evl 234645 10 10 1 2016-05-27 29158 0 374.473 M157 80000000587579 2016-05-27 00:00:00 r:20813 z:NCC:D 6 0 0 0 374_473000000000000_M157 0 evl 234647 10 10 1 2016-05-27 29157 0 374.473 M157 80000000587561 2016-05-27 00:00:00 c. 2 r:20813 z:NCC:D 6