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NEST BOXES & REFUGEES FOR WILD GARDEN ANIMALS
CHOOSING AND USING A REFRACTING TELESCOPE
English N.
Este manual ofrece muchos consejos acerca de por qué un telescopio refractor es una buena elección para un astrónomo aficionado, y cómo seleccionar el apropiado. Ofrece asimismo muchos consejos de uso de los mismos.
