It was probably made under licence. You do have the year (1985) and there's a high likelihood it was US release, since it says Hasbro Bradley (though it might've been international). There are a bunch of little things like this dotted about over here but it's hard to track down the origins of all of them.
There's a good chance there might be another manufacturer name somewhere inside the book to indicate who had the franchise for Hasbro to makie it...?