The Trees of Northern Bengal including shrubs, woody climbers, bamboos, palms and
tree ferns/ by A. M. Cowan,... and J. M. Cowan,... being a revision of the List of
the trees, shrubs and large climbers found in the Darjeeling district, Bengal, by
J. S. Gamble. - Calcutta : Bengal secretariat book depot, 1929
https://en.wikipedia.org/wiki/John_Macqueen_Cowan consulté le 08/04/2019
Information trouvée : dates de vie