TY  - BOOK
AU  - Perkins,Allan Kyle
TI  - The interlanguage performance of adult speakers of English as a second language on higher-order constructions ( microform)
SN  - Y910040104
PY  - 1977///
CY  - Ann Arbor, Mich.
PB  - University Microfilms International
KW  - Language and languages
KW  - Study and teaching
KW  - Language acquisition
KW  - Interlanguage (Language learning)
N1  - Thesis (Ph.D.) - University of Michigan, 1976
ER  -