id	keyword
hassl-3045	job
hassl-3045	satisfaction
hassl-3045	job satisfaction
hassl-3045	work
hassl-3045	oil
hassl-3045	gas
hassl-3045	study
hassl-3045	maintenance
hassl-3045	mvac
hassl-3045	industry
hassl-3045	level
hassl-3045	high
hassl-3045	factors
hassl-3045	mean
hassl-3045	years
hassl-3045	journal