ACKNOWLEDGMENTS Our thanks go out to D. N. Brady, D. E. Engstrom, and L. M. Rakow for their efforts in bridging the gap between our ADP background and their scientific environment. In addition, we wish to thank D. L. Wireman for his invaluable assistance in developing and designing the framework for the NAEG data storage and retrieval system. Our appreciation is also extended to M. C. Thompson and the Word Processing Branch for their editing and typing assistance. 310