Book Review The Placenta and Neurodisability (Clinics in Developmental Medicine. No. 169.) Edited by Philip Baker and Colin Sibley. 153 pp., illustrated. London, Mac Keith Press, 2006. $75. 978-1-898-68344-5 Biology and Pathology of Trophoblast Edited by Ashley Moffett, Charlie Loke, and Anne McLaren. 272 pp., illustrated. New York, Cambridge University Press, 2006. $110. 978-0-521-85165-7