01160pam a2200325 a 4500 20230110144810.0 071224s1992 vaua j 001 0 eng 92-006937 0809496755 (DLC) 92006937 2976125 DLC DLC DLC lcac QC25 .P48 1992 530 20 Physical forces. Authorized English language ed. Alexandria, Va. : Time-Life, c1992. 151 p. : col. ill. ; 31 cm. Understanding science & nature Questions and answers introduce such physical phenomena as force, motion, magnetism, heat, and sound. Physics Miscellanea Juvenile literature. Physics Miscellanea. Questions and answers. Time-Life Books 7 cbc orignew 1 ocip 19 y-gencatlg lcc 45940 45940