1973 DIY Modular Juan Bermudez Costa & Befaco

via Befaco where you'll find the post in Spanish. The following is a translation via Google (what's that about a tube of female sheep? paridas = ewes = female sheep?):

"This year we are again with a tremendous impetus. Our participation in Hangar Sound has crystallized in the transfer indefinitely its own space, a place for workshops and designing a tube all types of ewes.

In addition to our standard modular workshops (in Barcelona and Madrid), which also function as open days on topics of DIY advice sound, offer an advanced course in analog synthesis imparted by the very Juan Bermudez Costa (pictured, 1973!) , introduction to electronic noise (construction of a Mini-Theremin or analog touch micro battery), and construction of a monstrous unit of 'chorus' seventies style and 100% 'Made in Spain'.

All information in our section of workshops. We wait!"

If anyone has a better translation of paridas, let me know.