1971-04
1971-04_P07
1971-04_P08
1971-04_P09
1971-04_P10
1971-04_P11
1971-04_P12
1971-04_P13
1971-04_P14
1971-04_P15
1971-04_P16
1971-04_P17
1971-04_P18
1971-04_P21
1971-04_P22
1971-04_P23
1971-04_P27_prob not part of this batch - dont know date
1971-04_P28_prob not part of this batch - dont know date
1971-04_P29_prob not part of this batch - dont know date
1971-04_P30_prob not part of this batch - dont know date