Heimler, Charles H. Focus on physical science / [electronic resource] / Charles H. Heimler, Jack S. Price ; special needs consultant, Janet Mansfield Davies ; reading skills consultant, David L. Shepherd, special features consultant, Larry Wood.. — Columbus, Ohio : : C.E. Merrill,, c1984.. — vii, 536 p. : : ill. ; 24 cm. — (A Merrill science program).