@misc{indiciae4d52a49300a2, title = {Analysis of short-term variations in beach morphology ( and concurrent dynamic processes ) for summer and winter periods, 1971-72, Plum Island, Massachusetts — Illustration, Page 90}, year = {1977}, url = {https://www.biodiversitylibrary.org/page/32747029}, note = {Source identifier: page-32747029} }