TY  - BOOK
AU  - Viswanatha Ayyer N E
TI  - Vyaparik aur prasasanik pathra vyavahar
U1  - H 383.122 
PY  - 1993///
CY  - Thiruvananthapuram
PB  - Swathi Prakashan
KW  - Letters Correspondence
KW  - Postal Communication
KW  - Social Sciences
ER  -