title: Luna 9 photographs: evidence for a fragmental surface layer.
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.
authors.forename: D E
authors.initials: DE
authors.lastname: Gault
authors.forename: W L
authors.initials: WL
authors.lastname: Quaide
authors.forename: V R
authors.initials: VR
authors.lastname: Oberbeck
authors.forename: H J
authors.initials: HJ
authors.lastname: Moore