Thompson, H.A.2016-11-152016-11-15https://hdl.handle.net/2139/43389Soil aeration -- Trinidad and TobagoSoil moisture -- Trinidad and TobagoSoil air -- Trinidad and TobagoCacao -- Soils -- Trinidad and TobagoAeration and moisture studies in Trinidad soils. I, A simple method for the determination of soil moisture in the field. II, Gas exchanges in soils. III, Variation in composition of soil-air in cacao fieldsTheses