Davies, Delwyn G.,  4  0  1908- <br/><br/>
Fresh water  the precious resource      6 
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[by] Delwyn Davies. 
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<br/><br/> Discusses the physical and chemical properties of water, its biological importance to all forms of life, man's extensive uses but limited sources of fresh water, and the modern problems of water supply, pollution, and purification.       
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<br/><br/><label>ISBN: </label>  
<br/><br/><label>ISSN: </label>2 
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<br/><br/><label>LCCN: </label>69017356 
<br/><br/><label>Nat. Bib. No.: </label> 2 
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<br/><br/><label>Subjects--Personal Names: </label><br/>     2     --0------
<br/><br/><label>Subjects--Corporate Names: </label><br/>     6 --0-- 2 --------
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<br/><br/><label>Subjects--Chronological Terms: </label><br/> 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Water-supply;Water.;Water supply.    ----Juvenile literature.----20--
<br/><br/><label>Subjects--Geographic Terms: </label><br/>--------20--
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<br/><br/><label>LC Class. No.: </label>TD348  / .D3 19692 
<br/><br/><label>Dewey Class. No.: </label>553/.7  / 2 
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