Systems for study /
Raygor, Alton Lamon, 1922-
Systems for study / Alton Raygor, David M. Wark, contributing authors, Toni A. H. McNaron, Selma R. Burkom, Donald Norton. - 2d ed. - New York : McGraw-Hill, c1980. - ix, 205 p. ; 23 cm.
0070444196 :
79017085
378.1 RAY
Systems for study / Alton Raygor, David M. Wark, contributing authors, Toni A. H. McNaron, Selma R. Burkom, Donald Norton. - 2d ed. - New York : McGraw-Hill, c1980. - ix, 205 p. ; 23 cm.
0070444196 :
79017085
378.1 RAY