text Buckinghamshere The Open University Press 1992 Cet. 1 ind ix, 245 hlm ilus 21 cm Graham Flegg Bibliografi : hlm. 245 Indeks Kalkulus 20090227020508.0 YOGYA-02090000002035 Converted from MARCXML to MODS version 3.5 using MARC21slim2MODS3-5.xsl (Revision 1.106 2014/12/19)