TY  - BOOK
AU  - Singh, Brij Kishore Prasad
TI  - Vyavaharik patra lekhan kala
SN  - 8177212150
U1  - H48.4 Q3 
PY  - 2013///
CY  - New Delhi
PB  - Satsahitya Prakshan
KW  - Letter writing
KW  - Hindi language
KW  - letter wriring , Hindi
KW  - Official letter writing
ER  -