Chetty, C.K.R. et al. 1970. Estimation of Risk of Reversal of Arms and Order of Chromosomes in Karyotype Analysis of <I>Pinus roxburghii</I> Sarg. Indian Forester. 96, 11 (Nov. 1970), 811–816. DOI:https://doi.org/10.36808/if/1970/v96i11/26333.