[Various problems on the use of DDT under farm conditions].
D000383:Agriculture; D000821:Animal Feed / Q000032:analysis*; D000818:Animals; D003634:DDT / Q000032:analysis*; D005506:Food Contamination / Q000517:prevention & control*
D003634:DDT
Nekotorye voprosy primeneniia DDT v sel'skom khoziaĭstve.