00689cam a2200241 4500 788247 BD-DhUL 20140924110535.0 691103s1969 nyuac b 001 0 eng 74007075 DLC DLC DLC BD-DhUL QC481 .H183 537.5352 HAX Halacy, D. S. (Daniel Stephen), 1919- X rays and gamma rays [by] Daniel S. Halacy, Jr. New York, Holiday House [1969] 159 p. illus., ports. 24 cm. 4.50 Bibliography: p. 152-154. X-rays. 7 cbc orignew u ncip 19 y-gencatlg ddc BK 12668 12668 0 0 ddc 0 537_535200000000000_HAX 0 NFIC 22675 DUSL DUSL GEN 1992-10-18 Gift 537.5352 HAX A94378 2014-09-24 2014-09-24 BK