Did you mean: Search also for related subjects Search also for narrower subjects Search also for broader subjects Publication (National Research Council (U.S.)) ; no. 1550. Synthesis of highway practice, 0547-5570 ; 155 Progress in astronautics and aeronautics V-155 INTRODUCTION 3-13 SELECTED EXAMPLES OF RELEVANT OBSERVATIONS 33-97 RELEVANTTHEORIES 119-143 ASTROPHYSICAL MODELS IN PRINCIPLES AND IN PRACTICE 155-165 CONTRIBUTED PAPERS 117-321