A survey of the nutritional status of west Virginia apple orchards / by S. Singha [et. al.] - Morgantown, W. Va : West Virginia University. Agricultura and Forestry experiment station - 22 p. - Bulletin; 682 .

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Manzana -- anĂ¡lisis
Manzana -- elementos minerales
Manzana -- valor nutritivo
Manzana -- West Virginia