Mountains of the world : water towers for the 21st century Author(s) Liniger, Hanspeter Weingartner, Rolf Grosjean, Martin
Status survey of the African grey parrot [Psittacus erithacus timneh] and development of a management program in Guinea and Guinea-Bissau Author(s) Clemmons, Janine R.
Status, management and conservation of the African grey parrot Psittacus erithacus in Nigeria Author(s) McGowan, Philip J. K.
