How to solve mathematical problems /
Wickelgren, Wayne A., 1938-
How to solve mathematical problems / Wayne A. Wickelgren. - New York : Dover, 1995. - ix, 262 p. : ill. ; 22 cm.
How to solve mathematical problems / Wayne A. Wickelgren. - New York : Dover, 1995. - ix, 262 p. : ill. ; 22 cm.