san bai wan fen zhi yi zhong guo shui wen di zhi fen qu tu shuo ming shu 三百万分之一中国水文地质分区图说明书
Publisher: di zhi bu shui wen di zhi gong cheng ju 地质部水文地质工程局
Published: 1956-7
Language: chi
Number of pages: 176
Subjects: hydrology