61
by Verville, Elinor
Published 1995
Humana Press

62
by Margalit, Malka
Published 1990
Springer New York

63
Published 2003
Springer Netherlands

64
by Boss, Jeremy M., Eckert, Susan H.
Published 2003
Springer US

65
by Adey, Philip
Published 2004
Springer Netherlands

66
Published 2002
Springer Netherlands

67
by Freudenthal, Hans
Published 2002
Springer Netherlands

68
Published 1991
Springer Netherlands

69
Published 1994
Springer Netherlands

70
Published 2002
Springer Netherlands

71
Published 2002
Springer Netherlands

72
Published 1997
Springer Netherlands

73
Published 2002
Springer Netherlands

74
by Brousseau, Guy
Published 2002
Springer Netherlands

75
by Brown, Tony
Published 2002
Springer Netherlands

77
Published 2002
Springer Netherlands

78
Published 2002
Springer Netherlands

79
Published 2002
Springer Netherlands

80
Published 2002
Springer Netherlands