Libro 1,032 Documento de Gobierno 599 Mapa 315 Seriadas 143 Electrónico 109 Procedimiento de la Conferencia 27 Revista 15 Desconocido 13 Tesis 9 Conjunto 6 Material de referencia 6 Manuscrito 5 Capítulo de libro 3 Audiom 2 Partituras 2 Fotografía 1 ver todos ...

G - Geografía, antropología, recreación 212 Q - Ciencia 195 K - Leyes 70 F - Historia general americana 65 S - Agricultura 62 T - Tecnología 62 H - Ciencias sociales 42 V - Ciencias navales 42 C - Ciencias históricas 28 P - Lenguaje y literatura 23 E - Historia de los Estados Unidos 13 L - Educación 13 U - Ciencias militares 7 M - Música 5 A - Trabajos generales 4 R - Medicina 4 D - Historia mundial 2 N - Finas artes 2 ver todos ...

United States Coast Survey 120 Chesapeake Bay Program (U.S.) 102 U.S. Coast and Geodetic Survey 64 Chesapeake Bay Institute 60 Geological Survey (U.S.) 58 United States National Ocean Service 30 United States Army. Corps of Engineers. Baltimore District 27 National Ocean Survey 24 United States Environmental Protection Agency 19 Bache, A. D (Alexander Dallas), 1806-1867 18 U.S. Fish and Wildlife Service 18 Chesapeake Biological Laboratory 17 Chesapeake Executive Council 17 United States Congress. Senate. Committee on Environment and Public Works. Subcommittee on Water and Wildlife 15 United States Congress. Senate. Committee on Governmental Affairs. Subcommittee on Governmental Efficiency and the District of Columbia 15 United States Congress 14 United States Congress. House. Committee on Transportation and Infrastructure. Subcommittee on Water Resources and Environment 14 Chesapeake Research Consortium 13 Colman, Steven M 13 Schubel, J. R 13 United States National Oceanic and Atmospheric Administration 13 Johns Hopkins University 12 Halka, Jeffrey P 11 Langland, Michael J 11 National Status and Trends Program (U.S.) 11 United States Congress. Senate. Committee on Commerce 11 United States Government Accountability Office 11 Barbour, James, 1775-1842 10 United States Congress. House. Committee on Resources. Subcommittee on Fisheries Conservation, Wildlife, and Oceans 10 Gohn, Gregory S 9 ver todos ...

English 1,423 French 7 Latin 5 Dutch 1 No linguistic content 1

Maps 195 History 42 Periodicals 37 Observations 36 Statistics 34 Pictorial works 31 Guidebooks 23 Legislative hearings 23 Congresses 22 Nautical charts 19 Early works to 1800 18 Electronic books 18 Conference papers and proceedings 16 Fiction 14 Bathymetric maps 9 Documentary television programs 8 Illustrated works 7 Naval history 7 Surveys 7 Government publications 6 Juvenile literature 6 Road maps 6 Exhibitions 5 Field guides 5 Tourist maps 5 CD-ROMs 4 Databases 4 Identification 4 Internet resource 4 Nonfiction television programs 4 ver todos ...

19th century 9 Quaternary 9 War of 1812 7 20th century 6 Eocene 6 From 2 million years ago 5 From 40 to 55 million years ago 5 1580-1631 4 Colonial period, ca. 1600-1775 4 Miocene 4 Revolution, 1775-1783 4 1732-1799 3 18th century 3 From 10 to 25 million years ago 3 Holocene 3 1600-1677? 2 1600-1699 2 1600?-approximately 1676 2 1775-1783 2 17th century 2 1861 2 1862 2 1971-1980 2 From 10 thousand years ago 2 Tertiary 2 To 1800 2 active 19th century 2 -1798 1 1600 - 1775 1 1600-1775 1 ver todos ...