Lugo-López, M A. <br/><br/>
Nature and properties of major soils of Lajas Valley 
M. A. Lugo-López [and others] 
 - Río Piedras, P. R.  University of Puerto Rico. Agricultural Experiment Station  1959. 
 - 60p.  ill., map, tables. 
 - Agricultural Experiment Station, Río Piedras. Bulletin  no. 149 .
<br/><br/>Bibliography : p. 60. 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Soils--Puerto Rico--Lajas Valley.<br/>Agriculturare--Puerto Rico.