field trials of molluscicide wl8008 (n-tritylmorpholine) were carried out in khuzestan, iran. the liquid 2 (fx/28), a 16.5 w/v emulsifiable concentrate in tetrachloroethylene in concentrations of 0.25 ppm and 0.5 ppm was used against bulinus truncatus and lymnaea gedrosiana in standing and running water systems . bio-assay tests and laboratory experiments were made parallel to the field trials....