TY  - BOOK
AU  - Johansson, Stig
AU  - Johansson, Stig Hofland, Knut
TI  - Frequency analysis of English vocubulary and grammar : Based on the LOB corpus
U1  - P111:3:3 
PY  - 1990///
CY  - Oxford
PB  - Clarendon Press
KW  - P111:3:3
ER  -