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1. Chemical and microbial aspects of sludge composting and land application (id:42738)

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2. Sources and management of micro-organisms for the development of a fermentation industry (id:CAT87208504)

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3. Micro-organisms : what they are, where they grow, what they do (id:32293)

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4. Tubercle bacilli in butter : their occurrence, vitality and significance (id:5420904)

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5. The desirability of phosphates as an addition to culture media for the tubercle bacilli (id:5421038)

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6. Invisible microorganisms (id:5421034)