TY  - BOOK
AU  - Burnett William C Ed.
AU  -  Riggs Stanley R Ed.
TI  - Phosphate deposits of the world
T2  - International geological correlation programme project 156 phosphorites
U1  - H7151.1, M6.3         RR 
PY  - 1986///
CY  - Cambridge
PB  - Cambridge University Press       
KW  - Phosphate rock
ER  -