@book{235582,
	author = {Lehtonen, H. and Nyberg, K.},
	title = {Radioactive strontium - 85 Sr - in marking whitefish - Coregonus lavaretus L. - larvae and the dispersal of larvae from river to sea},
	note = {Lehtonen, H.-Finnish Game and Fisheries Research Institute, Fisheries Division, P.O. Box 202, 00151 Helsinki, Finland}
}