Tidbury, G.E.2016-11-152016-11-15https://hdl.handle.net/2139/43373Fertilizers -- Trinidad and Tobago -- UseFish-scrap fertilizer -- Trinidad and Tobago -- UseOrganic wastes as fertilizer -- Trinidad and Tobago -- UseSoils and nutrition -- Tropics -- TestingSoil fertility -- Tropics -- TestingSoils -- Trinidad and Tobago -- AnalysisThe place of certain organic manures in tropical agricultureTheses