Canonizado, Dennis M.  <br/><br/>
The Effect of organic fertilizer from placenta on the growth and nicotine content of tobacco (Nicotiana tabacum L.) 
Dennis M. Canonizado 
 -  2004 
 - xvii, 62 leaves   28 cm.  
<br/><br/> Thesis (BS Biology) -- Mariano Marcos State University-College of Arts & Sciences, Batac City   
<br/><br/>Bibliography: leaf 23