Gadiye, D.E.; Koskei, A. 2016. Spatial-temporal distribution of the black rhino population in the Ngorongoro Crater, Tanzania. International Journal of Biological Research 4 (2): 232-236. doi.org/10.14419/ijbr.v4i2.6659 { 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