Nature and resources :    newsletter about scientific research on environment, resources and conservation of nature : bulletin of the International Hydrological Decade / 

 - Paris :  Unesco,  1968. 
 - Vols. ;  28 cm. 
<br/><br/>V. 4- conference on the resources of the biosphere symposium on continental draft by J.T. Wilson ; 
<br/><br/>60  60 
<br/><br/><label>Subjects--Topical Terms: </label><br/> Hydrology -- Periodicals. <br/>Natural resources -- Periodicals.
<br/><br/><label>Dewey Class. No.: </label>333 / U3n