41
by Gerritse, R.
Published 1979
WRR

42
by WRR
Published 1979
WRR

43
by WRR
Published 1986
WRR

44
by WRR
Published 1987
WRR

45
by Trommel, W.A.
Published 1987
WRR

46
by Boogaarts, I.
Published 1989
WRR

47
by van der Stelt-Scheele, D.D.
Published 1989
WRR

48
by van Paridon, C.W.A.M.
Published 1990
WRR

49
by Hengsdijk, H.
Published 1990
WRR

50
by WRR
Published 1990
WRR

51
by Elfering, T.
Published 1991
WRR

52
by Meeus, J.
Published 1991
WRR

53
by de Jong, W.M.
Published 1991
WRR

54
by Mischgofsky, F.H.
Published 1991
WRR

55
by Jonkers, H.L.
Published 1991
WRR

56
by WRR
Published 1992
WRR

57
by Verdaasdonk, M.D.
Published 1993
WRR

58
by de Jong, W.M.
Published 1994
WRR

59
by CSHOB
Published 1995
WRR

60
by WRR
Published 1995
WRR