Download or read book Life Sciences and Space Research XXV(4) written by COSPAR. Plenary Meeting and published by Elsevier Science & Technology. This book was released on 1994 with total page 472 pages. Available in PDF, EPUB and Kindle. Book excerpt: These proceedings contain 56 papers that cover such topics as extraterrestrial organic chemistry and the origins of life; life on Mars; planetary protection for Mars missions and chemical evolution on Titan.