Van Hylckama, T. E. A. The water balance of the earth by T. E. A. van Hylckama - Laboratory of Climatology, Centerton, N.J Drexel Institute of Technology 1956 - 116 p. ; 27 cm. - Publications in climatology vol. 9 no.2 . Subjects--Topical Terms: EvapotranspirationPrecipitation (Metereology)