TY - BOOK AU - Selsam,Millicent AU - Dewey,Kenneth Francis TI - Up, down and around : the force of gravity SN - 0385098634 PY - 1977/// CY - New York PB - Doubleday & Co. KW - Gravitation KW - Juvenile literature KW - Gravity N1 - Explains the effects of gravity on human beings, satellites, the sun, moon, and planets ER -