Libby, Leona Marshall,  1919-, <br/><br/>
Fifty more timely problems of the environment / 
L.M. Libby. 
 - v, 61 pages ;  28 cm 
 - The Rand paper series ;  P-4589 .
 - Rand paper series ;  P-4589 .
<br/><br/><label>ISBN: </label> Hadiah 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Pollution.