Workmen supervised by CNRRA Agricultural Rehabilitation Officials, pull a heavy roller over millions of locust eggs United Nations Relief and Rehabilitation Administration CNRRA / 455 Tsingtao, China -- June 1947 These workmen, as well as the farmers, are paid with UNRRA flour for their efforts in destroying locusts and insect eggs which would otherwise damage China's food production in north and central China The flour-for-locusts swap was planned by UNRRA and is being carried out by CNRRA and MOAF Chinese National Relief and Rehabilitation Administration China Farming -- China Pest control -- China -- Qingdao Locusts Eggs RM http://search.archives.un.org/s-0801-0005-0001-00090 S-0801-0005-0001-00090 Security level: Unclassified