GY, Pierre M. Sampling of heterogeneous and dynamic material systems: theories of heterogeneity, sampling and homogenenizing [by] Pierre M. Gy - Amsterdam Elsevier science 1992 - xxx, 653 p.- - Data handling in science and technology; v.10 . Includes references & index. ISBN: 444896015 Dewey Class. No.: 620.43 / GYP