00598nam a2200133 a 450000500170000000800410001703500150005811000590007324501230013226000330025530000060028850501510029465000190044520260817163409.0                                          a.b100976971 aWisconsin.bUniversity. Engineering Experiment Station10aAspects of mechanical behavior of rock under static and cyclic loading :bannual technical progress report, March 1972  aMadison, Wis. :bs.n.,c1972  av0 aPt. A. Mechanical behavior of rock under static loading, by R. W. Heins.-Pt. B. Mechanical behavior of rock under cyclic loading, by B. C. Haimson 0aRock mechanics