Magnum Photos -
GB. Norfolk. Aerial view of Barton Broad, showing the drainage beds where the sludge is pumped. water flows back into the broad leaving the phosphates chemically bonded to the soil where they can do no harm. 1997. 
Image Reference 
MAP1997027Z00011/11 
(LON7227) 
© Peter Marlow/Magnum Photos 
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