Guide to international data exchange through the World Data Centres ( for the period 1960-onwards) /    
International Council of Scientific Unions. 
 - London :   Comite International de Geophysique through the IQSY Sec retariat,   1964. 
 - 5 p. ;    28 cm. 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Geophysics --International cooperation -- Handbooks, manuals, etc.--Information services --Handbooks, manuals, etc.------<br/>Geophysics --Handbooks, manuals, etc.-- Handbooks, manuals, etc.--Information services --Handbooks, manuals, etc.------