1. The superspecies concept;Amadon;Syst. Zool.,1966
2. Sea bird ecology and the marine environment;Ashmole,1971
3. Mesozoic paleogeography and early Angiosperm history;Axelrod;Bot. Rev.,1970
4. Freshwater triclads (Platyhelminthes, Turbellaria) and continental drift;Ball;Nature (London),1969
5. Die Vögel aus der altburdigalen Spaltenfüelung von Winter-shof (West) bei Eichstätt in Bayern;Ballmann;Zitteliana (Munich),1969