This content is only available via PDF.
Copyright 1968 The National Association of Biology Teachers
You do not currently have access to this content.
Calvin R. Fremling; An Experiment in Diffusion, Water Pollution, and Bioassay Using Polyethylene Film as A Semipermeable Membrane. The American Biology Teacher 1 September 1968; 30 (7): 575–579. doi: https://doi.org/10.2307/4442187
Download citation file: