@misc{indiciae3d7fcc8e1105, 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 70}, year = {1977}, url = {https://www.biodiversitylibrary.org/page/32747009}, note = {Source identifier: page-32747009} }