7 Kumar, A. 1987 – Petro Cropresources of Rajasthan. Proceeding Bio Energy Society IVth convention & Symposium ( Bio-Energy Society of India. New Delhi) 106-111.
7. Kumar, A. 1987 – Petro Crop Resources of Rajasthan. Proceeding Bio Energy Society IVth convention & Symposium ( Bio-Energy Society of India. New Delhi) 106-111.