TY - BOOK AU - Marshall,John TI - Go and stop SN - 1559161523 AV - QC73.4 .M383 1995 U1 - 531/.6 PY - 1995/// CY - Vero Beach, FL PB - Rourke Book Co. KW - Force and energy KW - Juvenile literature KW - Gravity KW - Friction KW - sears KW - Gravitation N1 - Includes index; Accelerated Reader; 4.3; 2-5 N2 - Invisible physical laws are described in the category of got and stop using children and their usual activities as models ER -