FFifty photographsFifty photographsde Pran Nath MehraMateriasArtistic PhotographyEdiciones (1)Fifty photographs (1968)Federation of Indian Photography · inglésMás obras de Pran Nath MehraRRecent advances in botanyRecent advances in botanyPPharmacognosy of Indian substitutes of male fernPharmacognosy of Indian substitutes of male fernCCytology of West Himalayan Betulaceae and SalicaceaeCytology of West Himalayan Betulaceae and Salicaceae
CCytology of West Himalayan Betulaceae and SalicaceaeCytology of West Himalayan Betulaceae and Salicaceae
AA study of the chromosome number in some Indian members of tA study of the chromosome number in some Indian members of the family Codoniaceae