The subject of the invention is {HEAD ~ a method} of treating {TAIL ~ biological masses} to produce a solid material which can be used as an agricultural fertiliser and conditioner, characterized in that it includes the steps of: 
The subject of the invention is { HEAD ~ a method } of treating { TAIL ~ biological masses } to produce a solid material which can be used as an agricultural fertiliser and conditioner , characterized in that it includes the steps of :
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