TY - BOOK AU - Schmidt,Roger C. ED - ASTM Committee F-8 on Sports Equipment and Facilities ED - ASTM Subcommittee F08.52 on Playing Surfaces and Facilities ED - Symposium on the Characteristics and Safety of Playing Surfaces (Artificial and Natural) TI - Natural and artificial playing fields: characteristics and safety features T2 - STP SN - 0803112963 AV - GV411 N378 PY - 1990/// CY - Philadelphia, Pa. PB - ASTM KW - ATHLETIC FIELDS KW - CONGRESSES KW - SYNTHETIC SPORTING SURFACES KW - TURF MANAGEMENT KW - SAFETY MEASURES N1 - "ASTM publication code number (PCN) 04-010730-47"; Includes bibliographical references and index ER -