3 ms·

Human urine shown to be an effective agricultural fertilizer

• Ras_ 16y ago
  Pradhan's dissertation: http://epublications.uef.fi/pub/urn_isbn_978-952-61-0062-3/index_en.html http://epublications.uef.fi/pub/urn_isbn_978-952-61-0062-3/i...