@misc{indiciae18c4bce81f5c, title = {Pleistocene-Holocene sediments interpreted by seismic refraction and wash-bore sampling, Plum Island - Castle Neck, Massachusetts — Illustration, Page 56}, year = {1973}, url = {https://www.biodiversitylibrary.org/page/32759619}, note = {Source identifier: page-32759619} }