TY - BOOK AU - DeVincenzi, Donald L. AU - Klein, Harold P. AU - Bagby, John R. CN - NAS 1.55: CY - Moffett Field, Calif. : CY - [Springfield, Va. : DA - 1991] ID - 179473 KW - Surface contamination. KW - Exobiology. KW - Planetary quarantine. N1 - Distributed to depository libraries in microfiche. N1 - Shipping list no.: 94-0820-M. PB - National Aeronautics and Space Administration, Ames Research Center ; PB - National Technical Information Service, distributor, PP - Moffett Field, Calif. : PP - [Springfield, Va. : PY - 1991] T1 - Planetary protection issues and future Mars missions TI - Planetary protection issues and future Mars missions VL - 10086 ER -