TY - GEN AU - Drake, Avery Ala, CN - I 19.76: CY - [Reston, Va.?] : DA - 1998. ID - 222916 KW - Geology KW - Geology KW - Geology KW - Geology KW - Geology N1 - Relief shown by contours and spot heights. N1 - Shipping list no.: 99-0934-M. N1 - Includes 3 cross sections. PB - The Survey, PP - [Reston, Va.?] : PY - 1998. T1 - Geologic map of the Piedmont in the Beltsville, Laurel, and Washington East quadrangles, Montgomery, Prince Georges, Howard, and Anne Arundel counties, Maryland, and the District of Columbia TI - Geologic map of the Piedmont in the Beltsville, Laurel, and Washington East quadrangles, Montgomery, Prince Georges, Howard, and Anne Arundel counties, Maryland, and the District of Columbia VL - 98-520 ER -