Ammonia in the UK 

 - London :  Department of the Environment, Food and Rural Affairs DEFRA,  2002 
 - DEFRA Publications (PB Series),   no. 6865 .
<br/><br/><label>Subjects--Topical Terms: </label><br/>Pollution and pollution control<br/>Ammonia emissions<br/>Ammonia<br/>Air pollution<br/>Habitat conservation<br/>Emissions
<br/><br/><label>Dewey Class. No.: </label>363.73879