1. Agriculture's responsibility in reestablishing soil quality criteria;Alexander,1971
2. Microorganisms and chemical pollution;Alexander;BioScience,1973
3. Biological Control of Plant Pathogens;Baker,1974
4. The effectiveness of certain strains of the soya-bean nodule organism when associated with different varieties of the host plant;Boyes;Ann. Appl. Biol.,1942
5. Genetics of N2-fixing organisms;Brill,1974