TY - GEN AU - Robinson, V AU - Tom, H C2 - NIST Interagency/Internal Report (NISTIR), National Institute of Standards and Technology, Gaithersburg, MD DA - 1993-08-01 LA - en PB - NIST Interagency/Internal Report (NISTIR), National Institute of Standards and Technology, Gaithersburg, MD PY - 1993 TI - Towards SQL Database Language Extensions for Geographic Information Systems ER -