This document lists the significant publications and presentation of the Science Directorate during the period January 1-December 31, 1999. Entries in the main part of the document are categorized according to NASA Reports (arranged by report number). Open Literature, and Presentations (arranged alphabetically by title). Most of the articles listed under Open Literature have appeared in refereed professional journals, books, monographs, or conference proceedings. Although many published abstracts are eventually expanded into full papers for publication in scientific and technical journals, they are often sufficiently comprehensive to include the significant results of the research reported. Therefore, published abstracts are listed separately in a section under Open Literature.Summers, F. G. (Compiler)Marshall Space Flight CenterABSTRACTS; CATALOGS (PUBLICATIONS); DOCUMENTATION; INFORMATION DISSEMINATION; TECHNICAL WRITING; REPORTS; CONFERENCES; TECHNOLOGY TRANSFER

This document lists the significant publications and presentations of the Science Directorate during the period January 1 - December 31, 2000. Entries in the main part of the document are categorized according to NASA Reports (arranged by report number), Open Literature, and Presentations (arranged alphabetically by title). Also included for completeness is an Appendix (arranged by page number). Most of the articles listed under Open Literature have appeared in refereed professional journals, books, monographs, or conference proceedings. Although many published abstracts are eventually expanded into full papers for publication in scientific and technical journals, they are often sufficiently comprehensive to include the significant results of the research reported. Therefore, published abstracts are listed separately in a subsection under Open Literature.Summers, F. G. (Compiler)Marshall Space Flight CenterDOCUMENTS; PRESENTATION; TECHNICAL WRITING; BIBLIOGRAPHIES; CONFERENCES; ABSTRACTS