TY - BOOK TI - Geologic maps: portraits of the earth PY - 1982/// CY - Washington D.C PB - U.S. Dept. of the Interior, Geological Survey N1 - G.P.O. sales statement incorrect in publication; Shipping list no. 86-669-P UR - http://catalog.gpo.gov/fdlpdir/locate.jsp?ItemNumber=621&SYS=000242788 ER -