Kedharnath, S. and Dhaundiyal, R. P. (1963) “Preliminary Observations on Air Layering in <I>Pinus Roxburghii</I> and <I>P. Caribaea</I>”;, Indian Forester, 89(3), pp. 218–221. doi: 10.36808/if/1963/v89i3/24866.