TY - BOOK AU - Onstott, Scott. TI - AutoCAD 2012 and AutoCAD LT 2012 essentials : AutoDesk official training guide SN - 9781118016794 (pbk.) 9781118104057 (ebk.) 9781118104071 (ebk.) 9781118104064 (ebk.) AV - T385 .O567 2011 CY - Indianapolis, Ind. PB - SYBEX, c ER -