Clark, J. Desmond; Brown, K.S. 2001. The Twin Rivers Kopje, Zambia: stratigraphy, fauna and artefact assemblages from the 1954 and 1956 excavations. Journal of Archaeological Science 28: 305-330. doi.org/10.1006/jasc.2000.0563 { 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