Greenhouse gas emissions during the agricultural stage of palm oil-based biofuel production associated with land use changes - Mohd Kusin, Faradiella; Mat Akhir, Nurul Izzati; Wong, Siew Yien; Mohamat Yusuff, Ferdius @ Ferdaus; Awang, Muhamad; Hamka, Farahana (Department of Biology, Faculty of Science, Universiti Putra Malaysia, 2014)