Columbia subject headings:
Agricultural productivity--India--Punjab.
Agricultural productivity--Pakistan--Punjab.
Rural development--India--Punjab.
Rural development--Pakistan--Punjab.
Harvard subject headings:
Agricultural productivity--India--Punjab.
Agricultural productivity--Pakistan--India--Punjab.
Agricultural productivity--Pakistan--Punjab.
Rural development--India--Punjab.
Rural development--Pakistan--India--Punjab.
Rural development--Pakistan--Punjab.
Princeton subject headings:
Agricultural productivity--India--Punjab.
Agricultural productivity--Pakistan--Punjab.
Rural development--India--Punjab.
Rural development--Pakistan--Punjab.