Environmental ecology and aerobiology 
edited by S.T. Tilak 
 - New Delhi  Today & Tomorrow's Printers & Publishers  1989 
 - 222 p.  24 cm. 
 - Recent researches in Ecology, Environment and Pollution  v. 3 .
<br/><br/><label>Subjects--Index Terms: </label>Agronomy Environmental ecology Aerobiology