00488nam a2200157 a 4500003000400000005001700004008004100021040004100062100001900103245006700122260004600189300001700235500003300252650002700285700001800312OSt20260129155428.0090330s19uu    xx            00    eng d  cHIGH SCHOOL LEARNING RESOURCE CENTER10aBrecher, Erwin10aChallenging science puzzles /cErwin Brecher and Mike Gerrard.0 aNew Delhi :bGoodwill Pub. House,c[1997]  a95 p. : ill.  aIncludes glossary and index.  aScientific recreations1 aGerrard, Mike