Comparison of a few systems for the determination of saprobic and trophic degree on the basis of plankton data
G. J. Nuland, J. F. G. M. MeisVolume:
70
Language:
english
Pages:
6
DOI:
10.1007/bf00016767
Date:
February, 1980
File:
PDF, 410 KB
english, 1980