@online {137, title = {Soil survey GIS layers for Massachusetts}, publisher = {MassGIS, NRCS}, abstract = {GIS datalayers portraying the latest soil survey data for Massachusetts}, keywords = {$\#$MapsDataPublications, $\#$Soils, $\#$SurficialMaps, agriculture, farm, maps, NRCS, soil, soils}, url = {http://www.mass.gov/mgis/soi.htm} }