LLL-B-810B (NOTICE 1), FEDERAL SPECIFICATION: BUILDING BOARD, (HARDBOARD) HARD PRESSED, VEGETABLE FIBER (02-OCT-1984) [S/S BY ANSI-A135.4]
LLL-B-810B (NOTICE 1), FEDERAL SPECIFICATION: BUILDING BOARD, (HARDBOARD) HARD PRESSED, VEGETABLE FIBER (02-OCT-1984) [S/S BY ANSI-A135.4].