Ask HN: Missing page from Practical Computing magazine (1980)

Perusing out of pure curiosity the May 1980 edition Practical Computing. I came upon a rather intriguing short story "And there was light" by a certain John Abbatt, which I was happily absorbed in until, without warning, pages 73 and 74 were nowhere to be found.

I understand that finding an excerpt nearly half a century old, from a little-known magazine and a little-known author, is bound to be challenging.