About COCA J
About Univ. Oviedo, Oviedo, ESP
About ALVAREZ R
About Univ. Oviedo, Oviedo, ESP
About RIERA F A
About Univ. Oviedo, Oviedo, ESP
About World Congress 3 of Chemical Engineering, 1986, Vol.1
About lignite
About low rank coal
About Biomars fuels and refuse derived fuels
About Fertilizer manufacturing industry
About 低級炭
About 残さ
About バイオマス
About フミン質
About 肥料