TY - JOUR AU - Michael Coble AU - Carolyn Steffen AU - John Butler C2 - Forensic Science International: Genetics DA - 2013-05-01 LA - en M1 - 7 PB - Forensic Science International: Genetics PY - 2013 TI - Haplotype Data for 23 Y-chromosome markers in four U.S. population groups ER -