Thanks, Micca. Yeah, the English version isn't that hard to get, it's the Spanish that's rare (at least in the US, and my sister who lives in Oaxaca was unable to get it for me, too). I believe it was published in Argentina (though possibly in Spain or by a multinational Hispanophone publisher). I think it's out of print, though Amazon says "Out of stock" which may or may not mean the same thing.

Haruo

PS Powells have several copies of everything, don't they?