00716cam a2200217 4500 243221944 TxAuBib 19910525120000.0 901129s1991||||||||||||||||||||||||eng|u 9780895773821 $24.00 0895773821 $24.00 DLC DLC DLC TxAuBib Hann, Judith. How science works [BOOK] / Judith Hann. Pleasantville, N.Y. : Reader's Digest Association, 1991. 192 p. : col. ill. ; 29 cm. Includes index. 20010530. Scientific recreations. Science Experiments Popular works.