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THE NATIONAL GEOGRAPHIC MAGAZINE 



AN ANTI-HOOKWORM SQUAD IN BELAIR, ST. VINCENT, BRITISH WEST INDIES 



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AN OFF DAY AT A NICARAGUAN HOOKWORM LABORATORY 



Any one who has traveled through tropical countries can appreciate what a vast need 

 there is for freeing the millions of people who dwell in the hot lands from the health- 

 sapping, strength-draining dominion of the hookworm. 



