You're right about the ISBN. I must have become fixated on the 13-number one. The Oslo = Oxford makes sense, too. My copy is supposed to be here by Sept 1, but I expect it before then.
The book your brother has is one of the ones I bought (the rider on the horse). Here are the details. You can see it was $34.50. I'd wait to see how comprehensive the one you've ordered is before considering this one.
Author: Lauritz Opstad
Title: MOTZFELDT, BENNY GLASSKUNSTNEREN (The Glass Artist
Bookseller Book No.: 2592
Price: US$ 34.50
Book Description: The foremost Norwegian glass artist Benny Motzfeldt made mostly very formal etched and sand-blasted pieces in the 1950's and into the 60's. Later on her work became very organic and natural in shape and design. She designed a number of commercial glasses at first, then experimented with small sculptures, as well as air bubbles and metal particles within the glass mass. The results that are shown here are beautiful, graphic, and innovative examples of her art glass. Motzfeldt was recognized in the field of glass-making in 1969 with the most prestigous Norwegian award, the Jacob Prize., Norwegian/ English, Year1973, Illust. B/W41, Illust. Color4, ISBN8271430009, Softbound, Not in perfect condition., Bio. Bibl. Pages94, Size7 1/2"x 4 1/2