@misc{indiciaea12a1748d94c, 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 77}, year = {1977}, url = {https://www.biodiversitylibrary.org/page/32747016}, note = {Source identifier: page-32747016} }