TY  - BOOK
AU  - Lado,Robert
TI  - Language teaching: a scientific approach 
AV  - P51 L3
U1  - 407 
PY  - 1964///
CY  - New York, London
PB  - McGraw-Hill
KW  - Languages, Modern
KW  - Study and teaching
N1  - Bibliography: p. 223-229
ER  -