O-S-61 (CANCELLATION NOTICE), FEDERAL SPECIFICATION: SALTS, NICKEL (FOR) ELECTROPLATING AND ELECTROTYPING (11-JAN-1930) [S/S BY 0-N-335)
O-S-61 (CANCELLATION NOTICE), FEDERAL SPECIFICATION: SALTS, NICKEL (FOR) ELECTROPLATING AND ELECTROTYPING (11-JAN-1930) [S/S BY 0-N-335).,