Forest changes in the Amazon Basin during the last glacial maximum

Biological Diversification in the Tropics

1983 • 1,150 citations

The genus Pinus.

1967 • 599 citations

Biological Diversification in the Tropics

1982 • 597 citations

The distribution of conifer and taxad genera in time and space

1963 • 359 citations

Equatorial Atlantic Deep-Sea Arkosic Sands and Ice-Age Aridity in Tropical South America

1970 • 221 citations

The Glaciation of the Ecuadorian Andes

1982 • 93 citations

The Ice-age Amazon

1979 • 31 citations

Studies in Ecuadorian geography

1950 • 25 citations

A taxonomic revision of Podocarpus---IV. The American species of section Eupodocarpus, sub-sections C and D

1948 • 15 citations