Wong Yew Choong
Rare-earth and yttrium minerals geology industrial processing and applications RAK F1 - MX (G) 2 / 1983 - Ipoh Perak Jabatan Penyiasatan Kajibumi Malaysia 1983 - ill:009p. 29.8 cm
Rare-earth and yttrium minerals geology industrial processing and applications RAK F1 - MX (G) 2 / 1983 - Ipoh Perak Jabatan Penyiasatan Kajibumi Malaysia 1983 - ill:009p. 29.8 cm