Identify trees in any season, not just when they are in full leaf. This field-tested guide features colour photos showing bark; branching patterns; fruits, flowers, or nuts; and overall appearance; as well as leaf colour and shape - all chosen specifically to illustrate trees in spring, summer, wint[...]

For people in the early Middle Ages, the earth, air, water and ether teemed with other beings. Some of these were sentient creatures that swam, flew, slithered or stalked through the same environments inhabited by their human contemporaries. Others were objects that a modern beholder would be unlike[...]

"Analysis and Management of Animal Populations" deals with the processes involved in making informed decisions about the management of animal populations. It covers the modeling of population responses to management actions, the estimation of quantities needed in the modeling effort, and the applica[...]