id	keyword
gssr-518	biogas
gssr-518	wastes
gssr-518	digester
gssr-518	yield
gssr-518	juliflora
gssr-518	research
gssr-518	digestion
gssr-518	prosopis
gssr-518	anaerobic
gssr-518	energy
gssr-518	poultry
gssr-518	layer
gssr-518	broiler