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EEP yearbook 1991/92 including the proceedings of the 9th EEP Conference, Edinburgh, 6-8 July 1992 1992 Brouwer, Koen | Smits, Simone | Boer, Leobert de |
Parque zoologico Simon Bolivar : plan de Educación ambiental e interpretación 1980 Glick, Dennis | Mena, Yadira | Morales, Róger |
Advances in animal conservation : the proceedings of a symposium held at the Zoological Society of London on 31st May and 1st June 1984 1985 Hearn, J. P. | Hodges, J. K. | Halle, Mark |
Zoos : instrument for conservation. National zoo policy and statutes and guidelines related with zoo management 1998