Investigation of certain factors concerning the resin-tapping industry in pinus longifolia
Champion, H.G.
Investigation of certain factors concerning the resin-tapping industry in pinus longifolia - Calcutta 1922 - 1-20 p. - Investigation, Industry India Forest Bulletin No. 51 .
Investigation of certain factors concerning the resin-tapping industry in pinus longifolia - Calcutta 1922 - 1-20 p. - Investigation, Industry India Forest Bulletin No. 51 .