![](/img/cover-not-exists.png)
The distribution of dragonfly nymphs across a pH gradient in south-central Ontario lakes
Pollard, J. Bruce, Berrill, MichaelVolume:
70
Language:
english
Journal:
Canadian Journal of Zoology
DOI:
10.1139/z92-125
Date:
May, 1992
File:
PDF, 675 KB
english, 1992