Modgil, D. and Kapil, M. 1990. Allelopathic Activity of <I>Pinus roxburghii</I> Sarg, and <I>Rhododendron arboreum</I> SM. Leaves. Indian Forester. 116, 6 (Jun. 1990), 512–514. DOI:https://doi.org/10.36808/if/1990/v116i6/8863.