1. Distribution of time lags between successive petroleum exploration activities

   • Zbigniew Łucki
   • Zbigniew Szkutnik

   Articles Pages: 523 - 556

2. The loghyperbolic: An alternative to the lognormal for modeling oil field size distribution

   • S. Javad Seyedghasemipour
   • B. B. Bhattacharyya

   Articles Pages: 557 - 571

3. Regionalization in geology by multivariate classification

   • J. Harff
   • J. C. Davis

   Articles Pages: 573 - 588

4. Statistical analysis of granophyric intergrowths in the Main Hill Arkasani Granophyre Pluton, eastern India

   • B. Chattopadhyay

   Articles Pages: 589 - 598

5. Using Q-mode factor analysis in biostratigraphic ordination

   • David H. Melnyk
   • E. Charlotte Glenn

   Articles Pages: 599 - 610

6. Problems in space-time kriging of geohydrological data

   • Shahrokh Rouhani
   • Donald E. Myers

   Articles Pages: 611 - 623

7. Book review

   • Ricardo A. Olea

   BookReview Pages: 625 - 629

8. Book review

   • D. E. Nierode

   BookReview Pages: 631 - 633

9. E. H. T. Whitten—1989 Krumbein medalist

   • John W. Harbaugh

   Association Announcement Pages: 635 - 636