{"id":"000028897","type":"book","title":"Scanning electron photomicrographs of southwestern pollen grains. - Tucson, AZ","container-title":"Journal of the Arizona Academy of Science ; 5.1969, S. 147-176 : zahlr. Ill","author":[{"family":"Martin","given":"Paul S. 1899-1974."}],"issued":{"raw":"1969"}}