1965
H. C. Westermann, 1961
H. C. Westermann, 1968
H. C. Westermann, 1958
H. C. Westermann, 1979
H. C. Westermann, 1978
H. C. Westermann, 1963
H. C. Westermann, 1976
H. C. Westermann, 1967
