CONCEPTS IN SCIENCE, GRADE 2, CURIE EDITION - BRANDWEIN, PAUL; COOPER, ELIZABETH; BLACKWOOD, PAUL; COTTOM-WINSLOW, MARGARET; BOESCHEN, JOHN; GIDDINGS, MORSLEY; ROMERO, FRANK; CARIN, ARTHUR (HARCOURT BRACE JOVANOVICH NEW YORK, 1980)
Keywords: SCIENCE; EDUCATION; GRADE 2 STUDENT TEXTBOOK; EARTH; PLANTS; ANIMALS; ENERGY; MATTER