Bøker av Martin Griffiths

Re-evaluates the terms of the realism-idealism debate by critically examining the work of Morgenthau, Walz and Bull. Contains summaries of the thinkers' work, valuable to students.

Planetary Nebulae and How to Observe Them is for amateur astronomers who want to go beyond the Messier objects, concentrating on one of the most beautiful classes of astronomical objects in the sky. Planetary nebulae are not visible to the naked eye, but they are a fascinating group of telescope objects.