TY - BOOK ED - THE AMERICAN SOCIETY OF CIVIL ENGINEEERS TI - JOURNAL OF THE URBAN PLANNING AND DEVELOPMENT DIVISON,VOL.99 NO.1 MAR. 1973 U1 - 711.405 PY - 1973/// CY - NEW YORK PB - THE AMERICAN SOCIETY OF CIVIL ENGINEEERS KW - URBAN PLANNING AND DEVELOPMENT ER -