Environmental science protect our planet : text - workbook 
Mosteiro, Arnaldo P. 
 - 1st edition. 
 -  Educational Publishing House.  2012 
 - xiv, 360 pages 
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<br/><br/><label>ISBN: </label>978-9-71513306-7 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Environmental science.
<br/><br/><label>Dewey Class. No.: </label>F 304.2 M915 2012