The tree book; a popular guide to a knowledge of the trees of North America and to their uses and cultivation Q Science
Bonner zoologische Beiträge : Herausgeber: Zoologisches Forschungsinstitut und Museum Alexander Koenig, Bonn Q Science
Narrative of the United States exploring expedition, during the years 1838, 1839, 1840, 1841, 1842 Q Science
Nature et faune : revue internationale pour la conservation de la nature en Afrique = Wildlife and nature : international journal on nature conservation in Africa Q Science
