Water resources data for Maryland and Delaware /
United States Department of the Interior, Geological Survey.

APA Citation

Geological Survey (U.S.). Water Resources Division. Water resources data for Maryland and Delaware. Parkville, Md.: The Survey.

MLA Citation

Geological Survey (U.S.). Water Resources Division. Water Resources Data for Maryland And Delaware. Parkville, Md.: The Survey,

Warning: These citations may not always be complete (especially for serials).