Biological surveillance :  reports of the NERC [Natural Environment Research Council] Working Parties on biological surveillance in the marine, freshwater and terrestrial environments [i.e. the Marine Biological Surveillance Working Party, the Freshwater Biological Surveillance Working Party, the Terrestrial Biological Surveillance Working Party]. 

 - London (27 Charing Cross Rd, WC2H 0AX) :  N.E.R.C.,  1976. 
 - [1],iv,30,[1]p. 
 - Publications : series B (Natural Environment Research Council) ;  no.18 .
 - Publications : series B (Natural Environment Research Council) ;  no.18 .
<br/><br/><label>ISBN: </label>0901875473 (sd) 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Biotic communities--Measurement.--Great Britain