00525nam a22001577a 4500 18279 18279 1870332288 419 TET M Tetzchner, Stephen von Introduction to sign teaching and the use of communication aids / Stephen von Tetzchner and Harald Martinsen ; translated by Kevin M. J. Quirk. London : Whurr, 1992. x,256p. : ill. ; 24cm. Sign languages Nonverbal communication Martinsen, Harald [author.] STS 0 0 0 0 41/4 AIISH AIISH 2021-11-03 0 419 TET M 10180 2021-11-03 00:00:00 2021-11-03 STS