Metode pengujian laboratorium cepat rambat ultrasonic dan konstanta elastis benda uji batu
Indonesia. Badan Standardisasi NasionalUnknown
Badan Standardisasi Nasional (Jakarta, [1991]) (ind) IndonesianUnknownStandar Nasional Indonesia (SNI)UnknownROCK MECHANICS-TESTING-STANDARDS-INDONESIA; Box 2/88; Unknown