00281    a2200109   4500020001500000082001300015100002100028245005000049260004300099300001700142650001200159  a0030059224  a530bKOR  aKorsunsky, Boris  aChallenging problems for physics to accompany  aNew YorkbSaunders collegec1995g1995  a132p.c25cm.  aPhysics