Lake managers handbook  a guide to undertaking and understanding investigations into lake ecosystems, so as to assess management options for lakes 
edited by W. N. Vant. 
 - New York  Water and Soil Directorate, Ministry of Work and Development  c1987. 
 - 1 vol. 230p.  ill.  29cm. 
<br/><br/>Includes index. 
<br/><br/><label>ISBN: </label>01104705 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Lake ecology--Handbooks, manuals, etc.--New Zealand