Book Review: Science and Religion: New Perspectives on the Dialogue, edited by Ian G. Barbour. (Harper Forum Books.) Harper & Row, Publishers, New York, 1968. xi + 323 pp. $3.95; Contemporary Religious Thinkers: From Idealist Metaphysicians to Existential Theologians, edited by John Macquarrie. (Harper Forum Books) Harper & Row, Publishers, New York, 1968. xii + 285 pp. $3.50; The Theologian at Work: A Common Search for Understanding, edited by A. Roy Eckardt. (Harper Forum Books) Harper & Row, Publishers, New York, 1968. xvii + 253 pp. $3.50