Guide to the caves of Minnesota

書目詳細資料
主要作者:	Hoagberg, Rudolph K.
其他作者:	Bayer, T. N. (joint author.)
格式:	圖書
語言:	English
出版:	Minneapolis University of Minnesota, Minnesota Geological Survey 1967
叢編:	Educational series (Saint Paul, Minn.) 4.
主題:	Caves > Minnesota > Guidebooks.