Somewhat squarish grotesque from 70s book cover

Anyone recognise the (quite appealing) typeface used on the two names (ie. not BREV) on this book cover from 1972? Spotted it at my parents' house.

http://imgur.com/Uh3XG

Comments

Giving it a bump - there are sufficiently many unique or unusual characters here that whoever knows it probably knows it, if you know what I mean.

Final bump after I briefly thought I had the answer. Surprisingly tricky!

If you give up on finding the original, Mija is a recent release with a similar feel.

http://new.myfonts.com/fonts/latinotype/mija/