@book{bhlitem125428, title = {The evaluation of dual beam echo sounders in hydrographic surveying }, copyright = {Not provided. Contact Holding Institution to verify copyright status.}, url = {https://www.biodiversitylibrary.org/item/125428}, note = {https://www.biodiversitylibrary.org/bibliography/61716}, publisher = {Monterey, California, Naval Postgraduate School, 1979}, author = {Seidel, Dean Robert. and Naval Postgraduate School (U.S.)}, year = {}, pages = {174}, keywords = {Oceanography|}, }