by Settele, Josef [, ed. lit.].
by Gómez de Aizpúrua, Carlos | Organismo Autónomo Parques Nacionales (España) [, ed.].
by Bellmann, Heiko | Insua, Estela [trad.] | Barris, Joan [trad.].
by Higgins, Lionel George | Riley, Norman Deubgh | Hargreaves, Brian [, il.].
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