1. Partial purification and properties of urease from Proteus mirabilis;Andersen,1969
2. Jackbean urease (EC 3.5.1.5);Blakeley,1969
3. Jackbean urease (EC 3.5.1.5);Blakeley,1969
4. Ammonia and biological deposition of calcium carbonate;Campbell;Nature, Lond.,1969
5. Nitrogen metabolism in terrestrial invertebrates;Campbell,1972