id	keyword
afs-71453	experiments
afs-71453	cent
afs-71453	yield
afs-71453	control
afs-71453	winter
afs-71453	seed
afs-71453	variety
afs-71453	tikkurila
afs-71453	plants
afs-71453	results
afs-71453	preparations
afs-71453	parathion
afs-71453	effect
afs-71453	cereals
afs-71453	depart