text Berlin Springer-verlag 1992 Ind xvi, 348 p.: ill.; 23 cm. xvi, 348 p.: ill.; 23 cm. PIERI, Christion J.M.G. SOIL FETILITY WEST AFRICA 631.45 631.45PIEf ISBN 3-540-53283-8 INLIS000000000011320 Converted from MARCXML to MODS version 3.5 using MARC21slim2MODS3-5.xsl (Revision 1.106 2014/12/19)