https://pictures.abebooks.com/isbn/9783540527190-us.jpg Rock Mechanics@Theory and Applications with Case Histories@By: Walter Wittke@Publisher: @Springer@Print ISBN: 9783540527190, 3540527192@eText ISBN: 9783642881091, 3642881092@Copyright year: 1990@Format: PDF@Available from $ 209.00 USD@SKU: 9783642881091 Ebooks here: https://ouo.io/WalpTep