Erwin, T., Sweetkind-Singer, J., & Larsgaard, M. L. The National Geospatial Digital Archives-Collection Development: Lessons Learned. Library Trends., Vol. 57 No. 3 (2009),490-515 57, .
Cita Chicago Style (17a ed.)Erwin, Tracey, Julie Sweetkind-Singer, y Mary Lynette Larsgaard. "The National Geospatial Digital Archives-Collection Development: Lessons Learned." Library Trends. Vol. 57 No. 3 (2009),490-515 57 ().
Cita MLA (9a ed.)Erwin, Tracey, et al. "The National Geospatial Digital Archives-Collection Development: Lessons Learned." Library Trends., vol. Vol. 57 No. 3 (2009),490-515 57, .
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