TY  - BOOK
AU  - Dudley, Nigel
TI  - Nitrates: The threat to food and water.Nigel Dudley
SN  - 978-1-85425-012-4
U1  - 363.7394 DUD 
CY  - London
PB  -  Green print 1990.
KW  - Sanitation
ER  -