Pengamatan di alam Hans Jurgen Press text Bandung Angkasa 1989 1 140hlm : Ilust. ; 21cm Hans Jurgen Press 502 502 HAN m 979-404-203-X 20191115095018 INLIS000000000396135 Converted from MARCXML to MODS version 3.5 using MARC21slim2MODS3-5.xsl (Revision 1.106 2014/12/19)