00370    a2200109   4500082001500000100002500015245006000040260006800100300001600168650001800184650005800202  a631.4bSHE  aSheldon, Richard P.   aDynamics of development of fertilizer mineral resources  aHawaiibU.S. Geological Survey Resource Systems Instituteg1979  a584p.c30cm  aSOIL SCIENCES  aSPECIFIC TECHNIQUES ; APPARATUS, EQUIPMENT, MATERIALS