TY  - BOOK
AU  - United nations, (Statistical office of-)
ED  - United nations, (Statistical office of-)
TI  - Standard international trade classification, Revised
T2  - Statistical paper series M no.34
U1  - V1N45,93:3 (X:5).N61s, K1/UN 
PY  - 1961///
CY  - New York
PB  - Statistical office of the United Nations.    
ER  -