Lama, R. D. Handbook on mechanical properties of rocks : testing techniquesand results. - Alemania : Trans Tech Publications, 1974. - 4 v. : il. ; 23 cm - Series rock and soil mechanics . LIFBI. ISBN: 0878490213 Subjects--Topical Terms: Explotación de minasHandbookMecánica de roca Index Terms--Genre/Form: Libro Universal Decimal Class. No.: 622