by J.L. Meuschke ... [and others] ; Department of the Interior, United States Geological Survey ; prepared in cooperation with the Minnesota Geological Survey
by J.L. Meuschke ... [and others] ; Department of the Interior, United States Geological Survey ; prepared in cooperation with the Minnesota Geological Survey
by J.L. Meuschke ... [and others] ; Department of the Interior, United States Geological Survey ; prepared in cooperation with the Minnesota Geological Survey
by J.L. Meuschke ... [and others] ; Department of the Interior, United States Geological Survey ; prepared in cooperation with the Minnesota Geological Survey
by J.L. Meuschke ... [and others] ; Department of the Interior, United States Geological Survey ; prepared in cooperation with the Minnesota Geological Survey
Department of the Interior, United States Geological Survey ; by J.L. Meuschke ... [and others] ; prepared in cooperation with the Minnesota Geological Survey
by K.G. Books ... [and others] ; Department of the Interior, United States Geological Survey ; prepared in cooperation with the Minnesota Geological Survey
by K.G. Books ... [and others] ; Department of the Interior, United States Geological Survey ; prepared in cooperation with the Minnesota Geological Survey
by K.G. Books ... [and others] ; Department of the Interior, United States Geological Survey ; prepared in cooperation with the Minnesota Geological Survey
by K.G. Books ... [and others] ; Department of the Interior, United States Geological Survey ; prepared in cooperation with the Minnesota Geological Survey
by K.G. Books ... [and others] ; Department of the Interior, United States Geological Survey ; prepared in cooperation with the Minnesota Geological Survey
by G.E. Andreasen and G.L. Zandle ; Department of the Interior, United States Geological Survey ; prepared in cooperation with the Commonwealth of Massachusetts, Department of Public Works