CAN HYDROTHERMAL BIOMASS PROCESSING SERVE AS AN ANALOGUE OF MILLENNIA-SCALE NATURAL CARBON MATURATION? A UNIFIED PERSPECTIVE ON CARBONISATION, HUMIFICATION, AND FULVIFICATION. Planet Sust [Internet]. 2026 Jan. 15 [cited 2026 Oct. 4];4(1):22-47. Available from: https://journal.umt.edu.my/planetsust/article/view/880