A digest of information on hexaethyl tetraphosphate /
Roark, R. C
A digest of information on hexaethyl tetraphosphate / R. C. Roark - Washington : Department of Agriculture - 12 h. - EUA. Dept. of Agriculture E-721 .
203034
Insecticidas
A digest of information on hexaethyl tetraphosphate / R. C. Roark - Washington : Department of Agriculture - 12 h. - EUA. Dept. of Agriculture E-721 .
203034
Insecticidas
