the Philadelphia metropolitan region should be selected
for open space. The steps used in this study are unique,
involving the creation of translucent overlays that when
added together revealed the most appropriate spaces for
the reservation of land for recreation and conservation.
This case study is followed by others, interspersed
with chapters on values, man’s historical responses to
values in different societies, reflections on building a
self-sustaining space capsule, process and form and health
measured in an urban setting. The case studies include
one on planning for the expansion of urban growth into
a major area northwest of the City of Baltimore, another
on alternative futures for Staten Island and a series of
individual studies. One study examined the ecology of
the Shenandoah and Potomac River