Annales Agriculturae Fenniae - Selaus asiasanan mukaan "pH"
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Nutrient content and fertilizer value of livestock manure with special reference to cow manure
Annales Agriculturae FenniaeAnnales Agriculturae Fenniae. Seria Agrogeologia et -chimicaMaatalouden tutkimuskeskuksen aikakauskirja = Journal of the Agricultural Research Centre : 3 (Agricultural Research Centre, 1989)
