id	keyword
ajaset-67	lpg
ajaset-67	bangladesh
ajaset-67	science
ajaset-67	engineering
ajaset-67	technology
ajaset-67	agricultural
ajaset-67	gas
ajaset-67	market
ajaset-67	energy
ajaset-67	print
ajaset-67	vol
ajaset-67	issn
ajaset-67	journal
ajaset-67	american