SOEDARSONO RlSWAN. NITROGEN CONTENT OF TOPSOIL IN LOWLAND TROPICAL FOREST IN EAST KALIMANTAN (INDONESIA), BEFORE AND AFTER CLEAR-CUTTING AND BURNING. Reinwardtia [Internet]. 2025 Jul. 17 [cited 2026 Jul. 2];10(2):131-8. Available from: https://biologyjournal.brin.go.id/index.php/reinwardtia/article/view/232