1. Manufacture of phosphoric acid and/or phosphatic fertilizer from phosphatic rock (2)

Herstellung von Phosphorsäure und/oder Phosphatdüngemitteln aus Phosphormineralen (30)

2. Natural calcium phosphates; natural aluminium calcium phosphates and phosphatic chalk

Natürliche Calciumphosphate; natürliche Aluminiumcalciumphosphate und Phosphatkreiden