1.
Science
; 153(3739): 985-8, 1966 Aug 26.
Article
in English
| MEDLINE
| ID: mdl-17837250
ABSTRACT
The morphological features of the lunar surface photographed by Luna 9 indicate a surficial layer of weakly cohesive to noncohesive frag mental material. Most of this material is finer than a centimeter and probably finer than a few millimeters, although objects of centimeter size and larger are plentiful.