4.4BSD/usr/src/usr.bin/learn/USD.doc/Refs.ig

Refs:1,230	bitzer skaper econom large scale comput based educat system plato comput assist instru testin guidan wayne holtzm harper row york 1970
Refs:231,177	gray hulska kumm lichte nimmer coala minico cai system ieee trans educat feb 1977
Refs:408,178	suppes using comput indivi instru comput americ educat john wiley york 1967 bushne allen
Refs:586,202	skinne why need teachi machin harv educ review reprin fieduc techno dececc holt rineha winsto york 1964 1961
Refs:788,119	kernig tutori introd unix text editor bell labora intern memora 1974