Chaudhari, D. C.; Uniyal, D. N.; Shiva, M. P. Comparative Studies on the Healing Rant of Blazes Tapped by ’Cup Lip’ Method (Channels) and ’Rill method’ (Rills) in <I>Pinus roxrurghii< I>. Indian Forester 1988, 114, 446-452.