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Bhat, R.V. and Singh, M.M. 1951. Indigenous Cellulosic Raw Materials for the Production of Pulp, Paper and Board Part Iv.-writing and Printing Papers from <I>Helioteres isora</I>, Linn. (<I>Maror phal</I>). Indian Forester. 77, 11 (Nov. 1951), 664–675. DOI:https://doi.org/10.36808/if/1951/v77i11/23326.