Proujan, Carl, Brain teasers galore : : puzzles, quizzes, and crosswords from Science world magazine / [electronic resource] / Carl Proujan, ed.. — New York : : Scholastic Book Services,, 1975.. — 91 p. ; 18 cm.




Puzzles.
Crossword puzzles.
Mathematical recreations.

GV1507.C7 / P7x 1975