Well, there was, there’d been a fair amount of work for some years by a guy called Tony Harthorne in South Africa. ’cause obviously managing, you know, managing those parks required that sort of knowledge. But the drugs were fairly, the drugs at the time were not particularly effective. And, and until these very powerful morphine-like drugs came on M 99 ine of course a drug we hear a lot about now fentanyl a a bit later, which were very effective. And then when combined with sedatives as well, different groups of, of those drugs actually became very, you know, very, very ubiquitous really. And used particularly with, well anything from el most certainly with herbivores, not so, it became more difficult with carnivores. But, but then, you know, we gradually built up a, an armory of drugs for those as well. But it, it was very, so I, there was a, there was minimal literature, there was a bit, there was some, but nothing like what’s available today.
