TY  - VF
TI  - Our constant enemy : : the insect
PY  - 0000///[197?]
CY  - Philadelphia : 
PB  - De Frenes Film : , Rohm and Haas Company : 
KW  - Insecticides
N2  - Description about the research and creation of insecticides using for combat the insect in home, industrial and agricultural front
ER  -