61
by Fierz-David, H. E.
Published 1952
Birkhäuser Basel

62
by Niggli, Paul
Published 1949
Birkhäuser Basel

63
by Wellauer, Max
Published 1954
Birkhäuser Basel

64
by Buddenbrock, W.
Published 1950
Birkhäuser Basel

66
by Vidmar, Milan
Published 1952
Birkhäuser Basel

67
by Buddenbrock, W.
Published 1967
Birkhäuser Basel

68
Published 1968
Birkhäuser Basel

69
by Zollinger, Heinrich
Published 1958
Birkhäuser Basel

70
by Dürr, Karl
Published 1954
Birkhäuser Basel

71
by Carathéodory, Constantin
Published 1960
Birkhäuser Basel

72
by Carathéodory, Constantin
Published 1961
Birkhäuser Basel

73
by Schmidt, Walter, Baier, Ernst
Published 1955
Birkhäuser Basel

74
by Prager, William
Published 1961
Birkhäuser Basel

75
by Schilt, H.
Published 1959
Birkhäuser Basel

76
by Ziegler, Hans
Published 1952
Birkhäuser Basel

77
by Guggenbühl, Walter, Strutt, Max J. O., Wunderlin, Willy
Published 1962
Birkhäuser Basel

79
by Weissfloch, Albert
Published 1954
Birkhäuser Basel

80
by Gäumann, Ernst
Published 1964
Birkhäuser Basel