TY  - BOOK
AU  - Constant, Kurt Michael, Ed.
AU  - Sheldrick, William F., Jt. Ed.
TI  - World nitrogen survey
SN  - 0-8213-2130-7
U1  - W 338.4766824 
PY  - 1992///
CY  - Washington,USA
PB  - World Bank
KW  - Market surveys
N1  - 174
ER  -