North-South Trench XII. North-South Trench XIΙ ... ΠΠ-7 1386, 1387 ΠΠ 502 SS 10486 ΠΠ 503 SS 10487 ΠΠ:1948.0417:18 ΠΠ:1948.0417:1 ΠΠ:1948.0417:2 ΠΠ:1948.0417:3 ΠΠ:1948.0417:4 ΠΠ:1948.0417:5 ΠΠ:1948.0417:6 ΠΠ:1948.0417:7 ΠΠ:1948.0420:8 ΠΠ:1948.0420:9 ΠΠ:1948.0420:10 ... Apr 17 1948 ... North-South Trench XII ... North-South Trench XIΙ