1. Cobalt: a micronutrient element for the growth of soybean plants under symbiotic conditions;Ahmed;Soil Sci.,1961
2. Concerning the reproduction of bacteroids;Almon;Zentralbl. Bakt. Parasit., Abt. II,1933
3. Molybdenum deficiency on a S. Australian ironstone soil;Anderson;J. Aust. Inst. Agric. Sci.,1942
4. The role of molybdenum in plant nutrition;Anderson,1956
5. Sulphur in nitrogen metabolism of legumes and non-legumes;Anderson;Aust. J. Sci. Res., Ser. B. Biol. Sci.,1950