THE DEPARTMENT OF DEFENSE (DOD) CONDUCTED A TWO-PHASE STUDY TO DETERMINE HOW SCIENTISTS AND ENGINEERS IN GOVERNMENT AND INDUSTRIAL RESEARCH, DEVELOPMENT AND PRODUCTION ACTIVITIES ACQUIRE INFORMATION FOR PERFORMING WORK ASSIGNMENTS ON DOD PROGRAMS. THE PHASE I STUDY COVERED THE INFORMATION NEEDS OF DOD PERSONNEL ENGAGED IN RESEARCH, DEVELOPMENT, TEST AND EVALUATION (RDT AND E) ACTIVITIES. PHASE II INVESTIGATED THE NATION'S DEFENSE INDUSTRY TO DETERMINE ITS INFORMATION NEEDS, AND THE FLOW OF SCIENTIFIC AND TECHNICAL INFORMATION (FLOW PROCESS) INHERENT IN SATISFYING THOSE NEEDS. IT IS BASED ON A REPRESENTATIVE SAMPLE OF 1500 INDIVIDUALS FROM APPROXIMATELY 120,000 SCIENTISTS, ENGINEERS, AND TECHNICAL PERSONNEL IN 83 ORGANIZATIONS IN THE DEFENSE INDUSTRY. SIXTY-THREE QUESTIONS WERE ASKED THEM REGARDING THE USER OF SCIENTIFIC AND TECHNICAL INFORMATION, HIS SCIENTIFIC OR TECHNICAL TASK, HIS UTILIZATION OF INFORMATION CENTERS AND SERVICES, AND THE SEARCH AND ACQUISITION PROCESS. A MATHEMATICAL ANALYSIS WAS DONE TO DETERMINE THE SIGNIFICANT RELATIONSHIPS AND FACTORS WITHIN THE FLOW PROCESS. THE PHASE II FINAL REPORT DESCRIBES THE RESULTS OF PHASE II, AND COMPARES THEM WITH THOSE OF PHASE I. IT IS PRESENTED IN THREE VOLUMES. VOLUME I CONTAINS A NONTECHNICAL SUMMARY OF PHASE II, INCLUDING GUIDELINES FOR MANAGEMENT DECISIONS AND RECOMMENDATIONS FOR THE FUTURE. THE OTHER TWO VOLUMES, LI 000 347 AND LI 000 348, ARE THE TECHNICAL DESCRIPTIONS AND THE MATHEMATICAL DATA FOR THE PROJECT. THIS DOCUMENT IS AVAILABLE AS AD-647-111 FROM THE CLEARINGHOUSE FOR FEDERAL SCIENTIFIC AND TECHNICAL INFORMATION, SPRINGFIELD, VIRGINIA 22151, $3.00 FOR HARD COPY, $0.65 FOR MICROFICHE, 67 PAGES. A SUMMARY OF THE PROJECT HAS BEEN PUBLISHED BY ARNOLD F. GOODMAN IN AMERICAN DOCUMENTATION INSTITUTE. PROCEEDINGS OF THE ANNUAL MEETING, OCTOBER 3-7, 1966, SANTA MONICA, CALIFORNIA, VOLUME 3, 1966, PAGES 283-298, UNDER THE TITLE "USER-NEEDS STUDY, PHASE 2. STRUCTURE FOR THE FLOW OF SCIENTIFIC AND TECHNICAL INFORMATION WITHIN THE DEFENSE INDUSTRY."