Upper level: e5 Services, systems and policies
Services, systems and policies for the planning, design, development and maintenance of public lands, (e.g. parks, forests, shorelines, wetlands) and private lands in the rural, suburban and urban context.
Exclusion: architecture and construction services, systems and policies (e515)
Lower livel:
e5208 Open space planning services, systems and policies, other specified
e5209 Open space planning services, systems and policies, unspecified