text Paris Librairie Armand Colin 1925 Per 204 p.: ill.; + Index 17 cm. Marcel Guichard NITROGEN FIXATION 631.8 631.8 GUI I INLIS000000000004105 Converted from MARCXML to MODS version 3.5 using MARC21slim2MODS3-5.xsl (Revision 1.106 2014/12/19)