Please see the most recent updates in the "Where did the .com name go?" thread. Posts number 16 and 17.

I agree it is most probably the LPG-2-30.If I believe this pdf , the glider is probably not the Alfaro 1 (please , go to p.227)
https://www.aeroclubvitoria.net/fundacion-heraclioalfaro/Ejemplo libro.pdf
and the Alfaro I could be shown page 84 ...
).