Section 110(b) in The Goa, Housing Board Act, 1968
(b)any officer or other employee of the Board, a written document signed by the Chairman, in case of item (a) and by the said officer or other employee in the case of item (b), conveying or setting forth such approval, sanction, consent, concurrence, declaration, opinion or satisfaction, shall be sufficient evidence of such approval, sanction, consent, concurrence, declaration, opinion or satisfaction.