TY  - BOOK
AU  - US Dept. of Agriculture Soil Conservation Service
AU  - in cooperation with Maryland Agriculture Experiment Station
TI  - Soil Survey of Saint Mary's County, Maryland
PY  - 1978///
N1  - 1. Maps, St. Mary's County, MD Soil Survey 2. Saint Mary's County, MD Soil Survey; 25 sheet maps
ER  -