Guide to the safe handling of radioisotopes in hydrology 

 - Vienna :  International Atomic Energy Agency,  1966 
 - 38 p. ;  21 cm. 
 - Safety series ;  no.20 .
<br/><br/> 'STI/PUB/131.'  'A manual prepared by the IAEA Secretariat with the help of the Food and Agriculture Organization and the World Health Organization.' 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Radioisotopes--Safety measures<br/>Hydrology