1. The system of lunar craters, Quadrant I.;Arthur;Commun. Lunar Planet. Lab., Univ. of Arizona,1963
2. The system of lunar craters, Quadrant III.;Arthur;Commun. Lunar Planet. Lab., Univ. of Arizona,1964
3. The system of lunar craters, Quadrant II;Arthur;Commun. Lunar Planet. Lab. Univ. of Arizona,1964
4. The system of lunar craters, Quadrant II;Arthur;Commun. Lunar Planet. Lab. Univ. of Arizona,1964
5. The systems of lunar craters, Quadrant III;Arthur;Commun. Lunar Planet. Lab. Univ. of Arizona,1965