author = { Geological Survey of Pennsylvania },

title = { Second Geological Survey of Pennsylvania },

publisher = {Board of Commissioners},

keywords = { Monografische Reihe , Bericht , Pennsylvania , Prospektion },

year = {19XX-},

abstract = {Teilw. u. d. T.: Geological Survey of Pennsylvania oder Pennsylvania Geological Survey},

address = { Harrisburg },

url = { http://slubdd.de/katalog?TN_libero_mab2 }