Duncan, Ernest R. creator Cole, William L. Haubner, Mary Ann Hater Sparks, Thelma M. Duncan, Ernest R. text Boston Houghton Mifflin Company c1981 monographic various paging : col., ill. ; 24 cm. W. G. Quast...[et al.] ; Ernest R. Duncan, coordinating author. Includes index. Mathematics Prof. 510 Q19 1981 0-395-29044-9 0-395-29053-8