Perhaps you should try some spelling variations:
publicaciones seriadas » publicaciones periodicas
instrumento pedagogico » instituto pedagogico, instrumento biologico, instrumento didactico
seriadas instrumento » sociales instrumentos, agrarias instrumento, medicas instrumentos
pedagogico de » pedagogia de
mineral de » general de, mineria de
mineral y » general y

You may be able to get more results by adjusting your search query.

• The words AND, OR and NOT may confuse the search; try adding quotes: "publicaciones seriadas instrumento pedagogico de ((mineral de) OR (mineral y)) espana ;~".
• Adding a wildcard symbol may retrieve word variants: publicaciones seriadas instrumento pedagogico de ((mineral de) OR (mineral y)) espana ;*.