
Subsoil; Exploration By Diggings (trial Pits) And Boring As Well As Sampling, Indications In Rock
出版:German Institute for Standardisation (Deutsches Institut für Normung)

專家解讀視頻
Subsoil; Exploration By Diggings (trial Pits) And Boring As Well As Sampling, Indications In Rock
出版:German Institute for Standardisation (Deutsches Institut für Normung)
專家解讀視頻