Éditeur(s) : The Service The Service ( Washington )
Résumé : (Bibliography) Bibliography: p. 296.
(Statement of Responsibility) [by Roberto E. Gierbolini], United States Department of Agriculture Soil Conservation Service in cooperation with University of Puerto Rico College of Agricultural Sciences.
Cover title.
English and Spanish.
(Funding) U.S. Department of Agriculture Soil Surveys
Puerto Rico
Mayagüez Region
Puerto Rico
Mayagüez Region

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