Sund, Robert B. <br/><br/>Accent on Science  -- Columbus, Ohio:  Bell & Howell Company.  1980. <br/> col.: ill.;  26. <br/><br/> include index <br/><br/><label>ISBN: </label>06750764639 <br/><br/><label>Dewey Class. No.: </label>GSL Cir 500 Su72 1980