TY  - BOOK
AU  - RYU Chang Yeol
TI  - Gisulkyoyukwonron (Foundation of technology education)
U1  - T:3(F), 495P1 
PY  - 2001///
CY  - Chungnam
PB  - Chungnam University Korea    
KW  -  Technology
KW  - KL
ER  -