Columbia subject headings:
Harvard subject headings:
Biologists--California--Directories.
College facilities--California--Directories.
Ecologists--California--Directories.
Ecology--Research--California--Directories.
Hydraulic engineers--California--Directories.
Hydrologists--California--Directories.
University of California (System)--Directories.
Water--Research--California--Directories.
Wilderness areas--Research--California--Directories.
Princeton subject headings:
Biologists--California--Directories.
College facilities--California--Directories.
Directories.
Ecologists--California--Directories.
Ecology--Research--California--Directories.
Hydraulic engineers--California--Directories.
Hydrologists--California--Directories.
University of California (System)--Directories.
Water--Research--California--Directories.
Wilderness areas--Research--California--Directories.