TY - BOOK ED - National Research Council (U.S.). TI - Planning and management of roadside vegetation: an analysis of principles T2 - Highway Research Board. Special report 23 U1 - 715 PY - 1956/// CY - Washington KW - Landscape gardening KW - Roadside improvement KW - Tree planting N1 - 0; 0; 0; 715_000000000000000_NAT ER -