Food and development in the semi-arid zone of east AfricaPhilip Wayland Porter · First published 1979Open the Tome
Potential photosynthesis and agriculture in TanzaniaPhilip Wayland Porter · First published 1974Open the Tome
A pilot study to determine the feasibility of creating a new vegetation map of TanzaniaPhilip Wayland Porter · First published 1973Open the Tome
Population distribution and land use in LiberiaPhilip Wayland Porter · First published 1957Open the Tome