00308nam a2200121 a 450000500170000002000150001708200210003210000190005324500440007225000120011626000380012830000200016620251203091830.0  a0471837431  a5590.72,bD, dav  aDavis, John C.  aStatistics and data analysis in geology  a2nd ed.  aNew YorkbJohn Wiley & Sonsc1986  ax,646p.c23 cm.