Puyot, Victoria C. <br/><br/>
Growth and yield performance of cotton (var.CRDN 174) as influenced by nitrogen levels and hill spacing  
Victoria C. Puyot 
 -  191 
 - xvii, 125 leaves  28 cm. 
<br/><br/> Thesis (M.S. Agriculture-Agronomy)--Mariano Marcos State University-Graduate School, Laoag City 
<br/><br/>Bibliography: leaves 63-66