Constantin Heinemann text Bochum Ruhr-Stickstoff 1953 Ger 113 p.: ill.; 20 cm. CULTIVATION -- HEVEA BRASILIENSIS -- FERTILIZER APPLICATION 633.91/HEI/k 210519 20210519133602 INLIS000000000003214 Converted from MARCXML to MODS version 3.5 using MARC21slim2MODS3-5.xsl (Revision 1.106 2014/12/19)