00253nam a2200097Ia 4500008004100000082002100041245004300062260002700105300001000132650001300142140113s9999    xx            000 0 und d  a631.811.6(04) J7  a"Magnesium , a universal a plant food"  b"Bergbau-Handel, 1957"  a100p.  aMagneium