UUnified algebra and trigonometryUnified algebra and trigonometryde Dick Wick HallEdiciones (1)Unified algebra and trigonometry (1962)WileyMás obras de Dick Wick HallSSets, Sequences and MappingsSets, Sequences and MappingsElementary real analysisPlane geometry, an approach through isometries
HHandling and storage of food grains in tropical and subtropiHandling and storage of food grains in tropical and subtropical areas
