00341nam a2200109Ia 4500008004100000040003800041100002000079245005400099260003700153300001700190653002400207211228s9999    xx            000 0 und d  cJayakar Knowledge Resource Centre  aBrown, Robert M 0a49 easy entertainment and science projects, vol.1  bD. B. TaraporewalaaBombayc1971  aV.1 p. : 96p  aScience Useful Arts