21. TESOL journal Alexandria, VA : Teachers of English to Speakers of Other Languages, 1991- ENG112 EBSCOhost EJS
24. UIST: proceedings of the ACM Symposium on User Interface Software and Technology ACM Symposium on User Interface Software and Technology. New York, N.Y. : Association for Computing Machinery, 1991- GDM515
26. The ethics of environmental concern Attfield, Robin. Athens, Ga. : University of Georgia Press, c1991. ENG406
