World of science 

 - New Delhi  S. Chand India     1994 
<br/><br/><label>Standard No.: </label>26993 
<br/><br/><label>Source: </label> Reference Collections 
<br/><br/><label>Subjects--Topical Terms: </label><br/>SCIENCE
<br/><br/><label>Dewey Class. No.: </label>Ak1,N94, N4.1-.24(RR)