The Fracture and Toughness of WoodsAbrstract and preview of article written by M. F. Ashby, K. E. Easterling, R. Harrysson, S. K. Maiti. Published in Proceedings of the Royal Society of London. Series A, Mathematical and Physical Sciences. Vol. 398, No. 1815 (Apr. 9, 1985), pp. 261-280 (24 pages).