1. The particle track record of the lunar surface;Comstock,1971
2. The particle track record of lunar soil;Comstock,1971
3. The exposure history of the Apollo 12 regolith;Arrhenius,1971
4. Preliminary data on lunar ground brought to earth by automatic probe Luna 16;Vinogradov,1971
5. Olivines: Revelation of tracks of charged particles;Krishnaswami;Science,1971