khairul-padlih documents

0 1989 Z. T. Bieniawski-Engineering Rock Mass Classifications_ a Complete Manual for Engineers and Geologists in Mining, Civil, And Petroleum Engineering-Wiley-Interscience (1989)
Documents 0 1989 Z. T. Bieniawski-Engineering Rock Mass Classifications_ a Complete Manual for Engineers and Geologists in Mining, Civil, And Petroleum Engineering-Wiley-Interscience (1989)