THE PRESENT WORK CONTAINS ANALYSES OF PEACE CORPS PROGRAMS IN SELECTED HOST COUNTRIES (THE PHILIPPINES, MALAYA, THAILAND, PERU, BOLIVIA, AFGHANISTAN, SOMALIA, NIGERIA, TANGANYIKA, SIERRA LEONE, TUNISIA, MOROCCO, AND JAMAICA) WRITTEN BY AN AUTHORITY ON EACH COUNTRY. COVERAGE OF DOMESTIC OPERATIONS OF THE PEACE CORPS IS STRICTLY LIMITED TO WHAT IS NECESSARY TO AN UNDERSTANDING OF ITS OVERSEAS ACTIVITIES AND PROBLEMS. EACH WRITER IS A SOCIAL SCIENTIST OR HISTORIAN WHO HAS HAD AN OPPORTUNITY TO OBSERVE VOLUNTEERS IN ACTION IN A HOST COUNTRY. THE UNIFYING THEME IN ALL THESE STUDIES LIES IN THE DIFFERENCES SEPARATING THE AMERICAN CULTURE OF THE VOLUNTEERS FROM THAT OF HOST POPULATIONS, AND IN THE MUTUAL COMMUNICATION AND COOPERATION THAT PASS, OR SHOULD PASS, BETWEEN THEM. THE DOCUMENT INCLUDES A FOREWORD BY MARGARET MEAD, AN INDEX, APPENDIXES ON THE ORGANIZATION OF THE PEACE CORPS AND THE IN-UP-OUT PRINCIPLE, AND CHAPTER REFERENCES. IT IS AVAILABLE FOR $6.95 FROM THE M.I.T. PRESS, MASSACHUSETTS INSTITUTE OF TECHNOLOGY, CAMBRIDGE, MASSACHUSETTS 02142. 379 PAGES. (LY)