How to translate the inscription on the coin dedicated to the German chemist Liebig ?

On Edge ( forming side ) of the Federal Republic of Germany coin dedicated to the 200th anniversary of the great German chemist Justus Liebig, placed his motto in three words : FORSCHEN.LEHREN.ANWENDEN .How to translate it into Russian ?On the first and third word problems like no, but the second once is impossible.And a further question : why, in the lower part of the coin placed five letters H, C, N, O, and P?