TY  - BOOK
AU  - "PREM KUMAR P,SELVA KUMAR G AND SENTHIL KUMAR M"
AU  - Mr.B.ANANDA KRISHNA
TI  - AUTOMATIC LEVEL CROSSING
U1  - 4.16 
N2  - "UNMAN GATE USING MICROCONTROLLER, IR SENSORS,7SEGMENT DISPLAY AND DC MOTOR"
ER  -