@inproceedings{SIGFIDET-1972-Parker,
	author        = "James L. Parker",
	booktitle     = "{Proceedings of the Third ACM-SIGFIDET Workshop on Data Description, Access and Control}",
	cdrom         = "SIGFIDET72/P383.pdf",
	pages         = "383--393",
	publisher     = "{ACM}",
	title         = "{File Structures and Access Methods for a Geographic Information Retrieval System}",
	year          = 1972,
}