If you're looking for background knowledge on landscape architecture and urban design:
- Encyclopedic Dictionary of Landscape and Urban Planning. Multilingual Reference Book in English, Spanish, French, and German. Springer Verlag, 2010.
- The Encyclopedia of Earth (EoE) is a free, electronic reference about the Earth, its natural environments, and their interaction with society - also urbanization, population, climate change effects, landscape management etc. EoE consists of an expert-reviewed collection of content contributed by scholars, professionals, educators, practitioners and other experts who collaborate and review each other's work.
Both general as well as subject dictionaries are available from the library website and can be a useful source to relevant search terms. A thesaurus lists synonyms and related terms and is a valuable tool, when looking for the best search terms.