text Batavia J.B. Wolters 1937 Eerste Deel, Zevende Druk dut 152 p.: ill.; 19 cm. J.H. Engelhardt SOIL IMPROVEMENT SOIL FERTILITY 631.52 631.52 ENG g INLIS000000000004533 Converted from MARCXML to MODS version 3.5 using MARC21slim2MODS3-5.xsl (Revision 1.106 2014/12/19)