The Sunday times book of brain teasers : : 50 hard (very hard) master problems / [electronic resource] / compiled and edited by Victor Bryant and Ronald Postill.. — New York : : St Martin's Press,, c1982.. — [156] p. : : ill. ; 21 cm.



0312775652 : $5.95

81021429


Puzzles.

GV1493 / .S867 1982

793.73