Duncan, Ernerst R. Quast, W.G. Cole, William L. Haubner, Mary Ann Hater Sparks, Thelma M. text Boston Houghton Mifflin Company c1981 monographic [410 p.] + [16 p.] : col. ill. ; tabs and figs. ; 24 cm. Ernest R. Duncan [et al.]. Mathematics 510 M426 1981 0395290449 0395290538