ROLING, Niels text Cambridge Cambridge University 1988 en xii, 233 p.: ill.; 24 cm. AGRICULTURE -- EXTENSION 63/ROL/e 0 521 34437 9 210520 20210520151129 INLIS000000000010771 Converted from MARCXML to MODS version 3.5 using MARC21slim2MODS3-5.xsl (Revision 1.106 2014/12/19)