Four new books for specialized concrete applications form the Practitioner's Guide series (American Concrete Institute, P.O. Box 9094, Farmington Hills, MI 48333; 248/848-3700; www.aci-int.org). Each guide — Hot Weather Concreting (75 pages, $48); Cold Weather Concreting (184 pages, $43); Tilt-Up Concrete Construction (245 pages, $54); Slabs on Ground (567 pages, $100) — is a compilation of articles, book excerpts, and association reports. The series is impressive because it draws from so many players in the concrete industry. Articles are reprinted from magazines such as Concrete Construction, Concrete International, and The Construction Specifier. Technical reports are included from associations such as the Aberdeen Group, the American Concrete Institute, the American Society for Concrete Construction, the Concrete Reinforcing Steel Institute, the Portland Cement Association, the Tilt-Up Concrete Association, and