(1971). Fourth five year plan1968-74: :summary. The Director, Publication Division, Ministry of information and broadcasting, Government of India.
Dyfyniad Arddull ChicagoFourth Five Year Plan1968-74: :summary. New Delhi: The Director, Publication Division, Ministry of information and broadcasting, Government of India, 1971.
Dyfyniad MLAFourth Five Year Plan1968-74: :summary. The Director, Publication Division, Ministry of information and broadcasting, Government of India, 1971.
Rhybudd: Mae'n bosib nad yw'r dyfyniadau hyn bob amser yn 100% cywir.