00901cam a2200265 4500 2188683 OSt 20170307145834.0 730525s1973 ilua j 001 0 eng 72087831 0673019721 DLC DLC DLC lcac Q163 .T7 1973 .T7 530 Townsend, Ronald D. Energy, matter, and change; excursions into physical science [by] Ronald D. Townsend. Paul DeHart Hurd, senior consultant. [Glenview, Ill.] Scott, Foresman [1973] xiv, 561 p. illus. 24 cm. A physical science textbook introducing basic concepts of light, electricity, motion, heat, and chemistry. Physical sciences Juvenile literature. Science. 7 cbc orignew 2 opcn 19 y-gencatlg lcc BK 256125 256124