Brecher, Erwin
Challenging science puzzles / Erwin Brecher and Mike Gerrard. - New Delhi : Goodwill Pub. House, [s.d.] - 95 p. : ill.
Includes glossary and index.
Scientific recreations
Challenging science puzzles / Erwin Brecher and Mike Gerrard. - New Delhi : Goodwill Pub. House, [s.d.] - 95 p. : ill.
Includes glossary and index.
Scientific recreations