The Antología semántica which contains the Spanish version of "Vagueness" has been published and the publishers will send BR a copy.

Bunge asks BR to contribute an article to the proposed volume entitled The Critical Approach: Essays in Honor of Karl Popper. "... I take the liberty of asking you to contribute a paper to the volume described in the enclosed prospectus. The value of the book would thereby be enormously enhanced, and Professor Popper, who is an old admirer of yours, would be very pleased."