TY - BOOK TI - Differentiated instruction teacher management system: Holt social studies : world history ancient civilization SN - 0030423325 U1 - 907 DIF 22nd ed. PY - 2013///] CY - Austin : PB - Holt, Rinehart and Winston, KW - History, Ancient KW - Textbooks. KW - Study and teaching (Secondary) KW - World history KW - Textbooks ER -