Helstone, F. S. (1998). Clinical Assessment for Psychotherapy; Qualitative-empirical and theoretical investigations. [Thesis, externally prepared, Universiteit van Amsterdam]. Faculteit der Psychologie.
van Kalmthout, T. (1998). Muzentempels. Multidisciplinaire kunstkringen in Nederland tussen 1880 en 1914. [Thesis, fully internal, Universiteit van Amsterdam]. Uitgeverij Verloren.
Mommersteeg, H. J. P. M. (1998). Vegetation development and cyclic and abrupt climatic change during the Late Quaternary - Palynological evidence from the Colombian Eastern Cordillera. [Thesis, fully internal, Universiteit van Amsterdam].
van Driel, B. E. M. (1998). The oxygen insensitivity assay of G6PDH activity in human cancer pathology: clinical and chemical aspects. [Thesis, fully internal, Universiteit van Amsterdam]. Print partners Ipskamp.
Gründemann, R. W. M., & Nijboer, I. D. (1998). WAO-intrede en werkhervatting [dubbelpromotie]. [Thesis, externally prepared, Universiteit van Amsterdam].
Nijboer, I. D., & Gründemann, R. W. M. (1998). WAO-intrede en werkhervatting [dubbelpromotie]. [Thesis, externally prepared, Universiteit van Amsterdam].
van Giersbergen, N. P. A. (1998). Bootstrapping Dynamic Econometrics Models. [Thesis, fully internal, Universiteit van Amsterdam]. Thesis Publishers.
Lambregts, C. S. B. (1998). Drug-resistant tuberculosis in the Netherlands. [Thesis, fully internal, Universiteit van Amsterdam].
van Beurden, M. (1998). VIN III: aspects of etiology, diagnostics and treatment. [Thesis, fully internal, Universiteit van Amsterdam].
Samlal, R. A. K. (1998). The Wertheim Okabayashi radical hysterectomy for early stage cervical carcinoma. Treatment results and identification of hih risk groups. [Thesis, fully internal, Universiteit van Amsterdam]. s.n.