Gajurel, Padma Raj Piper species (piperaceae) of North-East India (Arunachal Pradesh) / Padma Raj Gajurel, P.Rethy, Y.Kumar and B.Singh - Dehra Dun : Bishen Singh Mahendra Pal Singh, 2008. - xii, 202 p. 22 cm. ISBN: 9788121105330 Dewey Class. No.: 580 GAJ