id	keyword
afs-71957	time study
afs-71957	measuring
afs-71957	accuracy
afs-71957	work study
afs-71957	results
afs-71957	test
afs-71957	material
afs-71957	measuring accuracy
afs-71957	test persons
afs-71957	factors
afs-71957	times
afs-71957	variables
afs-71957	timing
afs-71957	factors material
afs-71957	value
afs-71957	measuring error
afs-71957	errors
afs-71957	deviation
afs-71957	watch
afs-71957	measurement
afs-71957	equipment
afs-71957	use
afs-71957	study material
afs-71957	training
afs-71957	table
afs-71957	work measurement
afs-71957	studies
afs-71957	emin
afs-71957	time studies
afs-71957	study equipment
afs-71957	model
afs-71957	method
afs-71957	test results