TY  - BOOK
AU  - National Geographic
AU  - Nang Chan Yeema
TI  - National Geographic Science Encyclopedia
SN  - 978-1-4263- 2542-7
U1  - R 503 NAT 
PY  - 2016///
CY  - Washington, D.C., United State
PB  - National Geographic
KW  - Reference
N2  - n/a
ER  -