Studies in the logic of confirmation / by Carl A. Hempel -- The structure of a scientific system / by R.B. Braithwaite -- The logic of discovery / by Norwood Russell Hanson -- Prospects for a theory of projection / by Nelson Goodman -- The concept of confirming evidence / by Rudolf Carnap -- Confirmation and relevance / by Wesley C. Salmon -- Relevant evidence / by Clark Glymour -- Concepts of evidence / by Peter Achinstein
