Kirkwood, J.K.; Markham, J.; Hawkey, C.M.; Jackson, S.I. 1991. Plasma vitamin E response in two black rhinoceroses following dietary supplementation. Veterinary Record 128 (8): 185-186, fig. 1. { 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