Chattopadhyhay, Deepanwita <br/><br/>Essential science Deepanwita Chattopadhyhay and Neena Chowdhary  -- India  Leaners Press  1995 <br/>176p.  18cm. <br/><br/><label>ISBN: </label>8171813852 <br/><br/><label>Subjects--Topical Terms: </label><br/>Science<br/><br/><label>Dewey Class. No.: </label>GC 500 C392 1995