From Britain, a thorough but stiff-necked overview of sterility and its medical treatment, with a quite advanced vocabulary and a somewhat off-putting tone. Barker, who practices at Queen Charlotte Maternity Hospital, London, addresses his text to couples who are beginning ""infertility investigations""--only appropriate, he feels, after at least 18 months of trying to conceive. Though he acknowledges that psychological factors may be involved, the emphasis throughout is on medical treatment. The mechanics of infertility investigation are knowledgeably detailed, from the initial physical exam and sperm counts to laparoscopy and corrective surgery. Much of the text, however, is distinctly clinical: clomiphene, we're advised, ""produces ovulation in about three-quarters of patients with functional and secondary amenorrhea. . . and with the Stein-Leventhal syndrome (polycystic ovaries)."" Barker is also given to annoying admonitions--against a woman's ""working herself into a 'state'"" about a pelvic exam--and to outright condescension: if ""fairly ignorant"" women ""have had an operation 'down there,'"" he writes, ""they are frequently unsure of the details"" (which, of course, may never have been explained). The information on the physical problems is trustworthy, but most readers will be happier with Sherman Silber's much clearer, more sympathetic How to Get Pregnant (p. 498).