Amazon has three books listed about systems by John Gall that look very similar, is there a specific one that you're talking about? or would recommend to start with?
Another Systemantics person! I profoundly wish that I had been exposed to this book during my education. Most traditional engineering education deals with predictable, small, compartmentalized systems. But the real world is none of these things, and engineering is the struggle to bring some semblance of order to chaos. Systemantics really outlines just what you can and can't expect out of any engineered system, and it stays in my head like a little crystal of knowledge that I draw from time and time again.
For large organisations it's a bit like getting a look at Oz behind the curtain :)