Biological surveillance of rivers : a biological monitoring handbook
Hellawell, J.M.
Biological surveillance of rivers : a biological monitoring handbook (Book) - Stevenage, Eng. Water Research Centre 1978 - 331 p. 30 cm.
Water quality biological assessment
628.515 : 551.482.2 HEL / 11285
Biological surveillance of rivers : a biological monitoring handbook (Book) - Stevenage, Eng. Water Research Centre 1978 - 331 p. 30 cm.
Water quality biological assessment
628.515 : 551.482.2 HEL / 11285