TY  - RPRT
TI  - Grammatical class differences in serial learning.
AU  - W E Simpson
AU  - K Klippert
PY  - 1968
DO  - 10.1080/00221309.1968.9710466
UR  - https://pubmed.ncbi.nlm.nih.gov/5725286/
ID  - 5725286
ER  -