Sobel, Max A. Maltesky, Evan M. Golden, Brother Neal. Lerner, Norbert. Cohen, Louis S. text New York Scribner Educational Publishers c1986 monographic ix, 641 p. : figs. ; 24 cm. Max A. Sobel [and four others]. Includes glossary and index. Geometry 516 H293 1986 06-544001-3