id	author	title	date	pages	extension	mime	words	sentence	flesch	summary	cache	txt
cet-9555		cet-9555		6	.pdf	application/pdf	3711	193	49	The finding of this research is purified biogas need a shorter time to heat 500 ml water compare to raw biogas and it has higher calorific value than raw biogas. Table 1 shows the chemical composition of raw biogas.	cache/cet-9555.pdf	txt/cet-9555.txt