the efficiency of human food chains and nutrient cycles text Amsterdam North-Holland 1976 ind xx, 541 hlm il 23 cm ed. by A.N. Duckham et al bta Nutrition Food chaim 613.2 0444110429 170309 20090604094714.0 NADAR-06090000016874 Converted from MARCXML to MODS version 3.5 using MARC21slim2MODS3-5.xsl (Revision 1.106 2014/12/19)