00671cam a2200217 7i4500 0000032004 20211210090000.0 0521387949 TSAM 418.007 RIC 1990 PE1128.A2 RIC 1990 Richards, Jack C. author The language teaching matrix Jack C. Richards. Cambridge, UK: Cambridge University Press, 1990. ix, 185 pages; 23 cm. text rdacontent unmediated rdamedia volume rdacarrier Cambridge language teaching library series Education Language and languages -- study and teaching