@misc{indiciae07c38be624d9, 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 61}, year = {1977}, url = {https://www.biodiversitylibrary.org/page/32746962}, note = {Source identifier: page-32746962} }