Effects of pcb's, pcdd's and pcdf's on reproductive success, and morphological, physiological and biochemical parameters in chicks of the Common term (Sterna hirundo) : a joint research performed in 1991/1992 : part I: Field study

Eight colonies. spread over the country and in areas differing in degree of contamination were selected. This enabled a comparison of colonies in a range from 'relatively clean' to 'heavily contaminated'. In these colonies two groups of possible effects were considered: ecological and ...