HBJ SCIENCE, GRADE 3 - COOPER, ELIZABETH; BLACKWOOD, PAUL; BOESCHEN, JOHN; GIDDINGS, MORSLEY; CARIN, ARTHUR (HARCOURT BRACE JOVANOVICH, PUBLISHERS FLORIDA, USA, 1989)
Keywords: SCIENCE; EDUCATION; PLANET EARTH IN SPACE; ANIMALS; PLANTS; MATTER; ENERGY; HEALTHY LIVING; PEOPLE ON PLANET EARTH