rr-env-Alternate_Sources_of_Energy (1973 ) - (1981 )


1973 :
X
X
1974:
1:Jan 2:Feb 3:Mar 4:Apr 5:May 6:Jun 7:Jul 8:Aug 9:Sep 10:Oct 11:Nov 12:Dec
1975:
1976:
1977:
1978:
1979:
X
X
X
X
1:Jan 2:Feb 3:Mar 4:Apr 5:May 6:Jun 7:Jul 8:Aug 9:Sep 10:Oct 11:Nov 12:Dec
1980:
X
X
X
X
X
X
X
X
1981:
X
X


#12
73: 10 & 11/73
74: 13 - 16
75: 18 July, Equip Directory
19 December
76: 20 - 23
77: 24,25, 26, 27
Feb, Apr, June
79: 7 & 8/ 79, 9 & 10/79
80: 3 & 4, 5 & 6, 7 & 8, 9 & 10
81: 3 & 4