Helmut Berndt ; mit einem Vorwort von Rudolf Pörtner

Econ Verlag 1985 1. Aufl

Available at 3 libraries

edited by Harold W. Lawson, Jr., Helmut Berndt, Gunnar Hermanson ; organized by EUROMICRO with the support of the Commission of the European Communities ... [et al.] and the cooperation of E.C.I. ... [et al.]

North-Holland Pub. Co. 1978

Available at 14 libraries

Helmut Berndt ; traduit de l'allemand par Denise Meunier

R. Laffont 1970 Les Enigmes de l'univers

Available at 1 libraries