1. Hong Kong Preliminary Planning Report;Abercrombie,1948
2. Survey of urban tree programs in the United States;Beatty;Urban Ecol.,1981
3. Computerization of Tree Inventories;Bickmore,1983
4. Physical problems caused by trees;Biddle,1981
5. Land-use Planning in Hong Kong: History, Policies and Procedures;Bristow,1984