共 6 条
- [1] *JOINT COAL BOARD, 1955, UNPUB STAT SUMM
- [2] *JOINT COAL BOARD, 1956, 10TH ANN REP, P11
- [3] *JOINT COAL BOARD, 1950, 4TH ANN REP, P31
- [4] *JOINT COAL BOARD, 1947, 1ST ANN REP, P12
- [5] *JOINT COAL BOARD, 1959, 13TH ANN REP, P68
- [6] WILSON MGA, 1959, NZ GEOGRAPHER, V15, P28