Irawan, Bambang. 1. “Growth Performance of One Year Old Seedlings of Ironwood (Eusideroxylon Zwageri Teijsm. & Binn.) Varieties”. Jurnal Manajemen Hutan Tropika 18 (3). Bogor, INA, 184-90. https://jurnal.ipb.ac.id/index.php/jmht/article/view/6005.