00454nam a2200169 a 450000100080000000500110000800800410001910000540006024500240011426000620013830000100020065000210021065000110023165000120024265000100025465000200026410095992014-02-22       1955    bl uuuu     u00u1 u    #d1 aANNUAL MEETING OF THE BOARD OF TECHNICAL ADVISERS  aPotassium Symposium  aBerna (Suiza): Instituto Internacional de la Potasac1955  a613p.  aABONOS POTASICOS  aITALIA  aPOTASIO  aSUELO  aTIPOS DE SUELOS