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2. A nested sieve sampler for collecting aquatic invertebrates in rice paddies;Barrion;International Rice Research Newsletter,1982
3. Respiration in the African swampworm Alma emini;Beadle;Michigan Journal of Experimental Biology,1957
4. Tillage implements for soil incorporation of carbofuran granules in rainfed wetland fields;de la Cruz;International Rice Research Newsletter,1981