Kenya: A Geomedical Monographby H. J. Diesfeld; H. K. Hecklau; J. A. Hellen; I. F. HellenLearmonth · Geographical Journal1979PDF445 KB
Beobachtung Eines Weissen Hellen Fleckens Auf Dem Saturnsringe Von Dr. F. Terby in LoewenTerby · Astronomische Nachrichten1889PDF80 KB
The Health of Nations. Medicine, Disease and Development in the Third Worldby B. F. Iyun; Y. Verhasselt; J. A. HellenPringle · Springer Netherlands1997PDF461 KB
Afghanistan. By Ludolph Fischer. (Vol. 2 of Geomedical Monograph Series; Text in German and English, English translation by J. A. Hellen and I. F. Hellen.) Springer-Verlag: Berlin, Heidelberg and New York, 1968. Pp. xii + 168, plates, maps, DM48, $12.00.Howe · Modern Asian Studies1970PDF141 KB
Rural Economic Development in Zambia, 1890–1964. By J. A. Hellen. München: Weltforum Verlag for Inst. f. Wirtschaftsforschung, 1968. Pp. 297, bibl., maps. Afrika-Studien, 32. DM.44, $11.Siddle · Africa1970PDF377 KB
The feasibility of finite element codes for elasto-plastic analysis: Cesari, F, Gheduzzi, P, Vannini, L and Hellen, T K in Numerical methods for nonlinear problems: Int. Conf University College, Swansea, UK Vol 1 (1980)Computer-Aided Design1981PDF160 KB
Libyen/Libya. Geomedical monograph series I. By H. Kanter. (Regional studies in geographical medicine, published in the Schriftenreihe der Heidelberger Akademie der Wissenschaften: Math.-naturw. Klasse. H. J. Jusatz, (Ed.). Director of the Heidelberg Univ. Inst. for Tropical Hygiene and Public Health). Berlin, Heidelberg, New York (Springer Verlag) 1967. (In German and English – English…Quarterly Journal of the Royal Meteorological Society1968PDF236 KB
