books.google.com.auhttp://books.google.com.au/books/about/Mechanism_and_theory_in_organic_chemistr.html?id=mrYPAQAAMAAJ&utm_source=gb-gplus-shareMechanism and theory in organic chemistry
It is the older theory of calottes of electrones and benzol rings, in the newer theory we need a concept of temperature and how it widens the spin of electrons. A good book. For the present day ...Read full review