Baker, Arthur O. Your science world / Arthur O. Baker, Grace C. Maddux and Helen B. Warrin. - New York : Rand McNally, c 1960. - 256 p. : ill. ; 22 cm. - Junior scientist. . Includes index. 300 300 LCCN: 60001806 Subjects--Topical Terms: Science.Children Books. Dewey Class. No.: 500 / B171y