1. Dual extraction ofR-mode andQ-mode factor solutions

   • Di Zhou
   • Theodore Chang
   • John C. Davis

   OriginalPaper Pages: 581 - 606

2. Invariant point configurations—a combinatorial approach

   • Steven I. Usdansky
   • Dennis E. White

   OriginalPaper Pages: 607 - 615

3. Shape and texture from serial contours

   • C. Lin

   OriginalPaper Pages: 617 - 632

4. Estimation of linear combinations and co-kriging

   • Donald E. Myers

   OriginalPaper Pages: 633 - 637

5. A semiquantitative explanation of the observed ventisphere phenomenon

   • Emanuel Azmon
   • David Elazar

   Short Notes Pages: 639 - 642

6. Review

   • R. A. Reyment

   ReviewPaper Pages: 643 - 644

7. Letter to the editor

   • W. E. Bardsley

   Letter Pages: 645 - 647