424- Interpolation Formulas

569- Time Sharing and Incremental Computation

406- Notes on Interpolation Formulae

590 - Note on Statistical Methods.

507- Difference Equations

755-Programming Linear - part I

556- Notes on Statistical Methods

408- Numerical Integration Methods

1455- P E R T / CPM . A Modified Version

764 Part 2 - The 1620 Basic Language Programming. Part ( II ) .