Hill, Stanford R.-- <br/><br/>Integrated science/ Hill, Stanford R.--  -- United States of America:  Carolina Academic Press.  1990 <br/>494 p.:  col.,<1> ill.;  27 cm. <br/><br/> includes indexes. <br/><br/><label>ISBN: </label>0890893586 <br/><br/><label>Dewey Class. No.: </label>Elem 500 1990