Tokunaga, S.; Mori, T. 1939. Report of diggings at Dokantin, the coast of the river Toman, Korea – Report of diggings at Tamalukou, province Chien-tao, Manchoukuo [in Japanese, with English abstr].. Geology 1939: 60 pp., with figs, tabs and plates. { copied = true; setTimeout(() => copied = false, 10000); }).catch(err => { console.error('Failed to copy:', err); }); " type="button" :class="copied ? 'bg-secondary border-secondary' : 'border-primary hover:bg-primary'" class="group lg:min-w-64 flex items-center justify-between gap-5 border border-solid px-5 py-2 cursor-pointer transition-colors"> PDF download available