TY - GEN AU - Weist,R M AU - Wysocka,H AU - Witkowska-Stadnik,K AU - Buczowska,E AU - Konieczna,E TI - The defective tense hypothesis: on the emergence of tense and aspect in child Polish SN - 0305-0009 PY - 1984///0904 KW - Child, Preschool KW - Concept Formation KW - Humans KW - Infant KW - Language KW - Language Development KW - Poland KW - Semantics N1 - Publication Type: Journal Article; Research Support, Non-U.S. Gov't; Research Support, U.S. Gov't, Non-P.H.S UR - https://doi.org/10.1017/s030500090000581x ER -