editors P. J. S. Olney & Pat Ellis books & textbook
International Zoo Yearbook 31, 1992: Australian Fauna (Volume 31: Australian Fauna)
editors P. J. S. Olney & Pat Ellis
Zoological Society of London /1992-01-01 Hardcover
1993 International Zoo Yearbook (International Zoo Yearbook, Volume 32: Ungulates)
editors P. J. S. Olney & Pat Ellis
Zoological Society of London /1992-01-01 Hardcover
