author = { Wirth, Michael AND Hale, Mason E. },

title = { The lichen family Graphidaceae in Mexico },

publisher = {Smithonian Inst.},

keywords = { Mexiko , Schriftflechten },

year = {1963 [erschienen 1968]},

booktitle = {Contributions from the United States National Herbarium ; Lichens, algae ; 36,3},

address = { Washington, DC },

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