1. Predicted effects of fertilizers upon the algal production in Fern Lake (Norway);Berce;FiskDir Skr. Ser. Horunders,1969
2. Predicted effects of fertilizers upon the algal production in Fern Lake (Norway);Berce;Biol. Abs.,1970
3. Eutrophication;Foehrenbach;J. Wat. Pollut. Control Fed.,1971
4. Molybdenum in some ocean and estuarine waters;Head;J. mar. biol. Ass. U.K.,1970
5. The phytoplankton of the Menai Straits;Jones;J. Cons.,1970