Librería Samer Atenea
Kálamo Books
Librería Elías (Asturias)
Librería Kolima (Madrid)
Librería Proteo (Málaga)
This book seeks the unity in this diversity by asking what properties a structure should have to qualify it to be a logic. It does not provide a complete atlas of the logic manifold but prepounds a principle which, though it makes neither the crooked straight nor the rough places plane, facilitates the drawing of local charts of the fortuitous crookedness of real logical highways and byways.