The search for typically refers to one of three distinct types of documents: the official declassified U.S. Air Force UFO files , a specialized Spanish-language guide for used car prices in Mexico, or a fictional/educational book based on the History Channel series . 1. Official Project Blue Book (UFO Archive)
A systematic study of 12,618 UFO reports conducted by the USAF to determine national security threats. Where to find the PDF: libro proyecto libro azul pdf
Aquí viene la parte práctica. Dado que estos documentos son de dominio público (al menos los del gobierno de EE. UU.), puedes encontrarlos en repositorios oficiales. The search for typically refers to one of