Control of helopeltis by DDT spraying - 1947
Indian Tea Association Scientific Department
Control of helopeltis by DDT spraying - 1947 - Calcutta - 13 p. - No. 2; Indian Tea Association .
632.754.1:632.951
Control of helopeltis by DDT spraying - 1947 - Calcutta - 13 p. - No. 2; Indian Tea Association .
632.754.1:632.951