What has the author Guy Philip Spaven written?

W. Geoffrey Spaulding has written:

'Vegetation and climates of the last 45,000 years in the vicinity of the Nevada test site, south-central Nevada' -- subject(s): Climate, Paleobotany, Paleoclimatology, Vegetation and climate

'The presettlement vegetation of the California desert' -- subject(s): Paleobotany, Desert plants