U.S. Government Printing Office: 1980 - O-328-155
For sale by the Superintendent of Documents
U.S. Government Printing Office, Washington, D.C. 20402
This book is dedicated to all the citizens of the United States of America who have made this program of interplanetary exploration possible and who, along with all mankind, will benefit from the increased awareness of the universe and how the Earth and its peoples relate to it.