Book reviews and notices : ALAN THOMAS, JOANNA CHATAWAY and MARC WUYTS, eds., Finding out fast: Inves tigative skills for policy and development. New Delhi: Vistaar Publications, 1998. 376 pp. Figures, tables, references, index. Rs. 395 (hardback) AND WILLIAM FOOTE WHYTE, Creative problem solving in the field: Reflections on a career. Walnut Creek: Alta Mira Press, 1997. 162 pp. References, index. $42.00 (hardback)/$19.95 (paperback)