TY - BOOK AU - Perniss Pamela M. Ed. AU - Pfau Roland Ed. TI - Visible variation : Comparative studies on sign language structure T2 - Trends in linguistics: studies and monographs; 188 SN - 9783110195781 (hbk) U1 - P99(Y:386), P7 PY - 2007/// CY - Berlin PB - Mouton de Gruyter Germany KW - LINGUISTICS ER -