choice of technique in difficult inguinal hernias personal experience the authors refer on their positive results in the treatment of socalled difficult inguinal hernias relapsing or multiple hernias with the use of prosthetic prolene mesh according to stoppas procedure partly modified through a preperitoneal approach after a pfannenstiels incision on the other hand recurrent hernias in risky patients as well as gross hernias are treated by rives method which consists in a prolene mesh placement through the inguinal approach biomonitoring and exposure levels of imidacloprid in air of workplace and on skin of workers exposed to pesticides the article presents results ofhygienic studies on work conditions in using imidaclopridbased pesticides in agriculture analysis covered imidacloprid levels in air of workplace on skin and in urine of workers