NATIONAL CONCRETE MASONRY ASSOCIATION. United States. SOUND REDUCTION PROPERTIES OF CONCRETE MASONRY WALLS; REPORT OF SOUND TRANSMISSION LOSS AND AIR FLOW RESISTANCE MEASUREMENTS ON CONCRETE BLOCK WALLS.
Չիկագոյի ոճի (17րդ խմբ.) մեջբերումNATIONAL CONCRETE MASONRY ASSOCIATION. United States. SOUND REDUCTION PROPERTIES OF CONCRETE MASONRY WALLS; REPORT OF SOUND TRANSMISSION LOSS AND AIR FLOW RESISTANCE MEASUREMENTS ON CONCRETE BLOCK WALLS. BASED ON REPORTS SUBMITTED BY THE RIVERBANK ACOUSTICAL LABORATORIES ARMOUR RESEARCH FOUNDATION, (1959?).
MLA (8րդ խմբ.) ՄեջբերումNATIONAL CONCRETE MASONRY ASSOCIATION. United States. SOUND REDUCTION PROPERTIES OF CONCRETE MASONRY WALLS; REPORT OF SOUND TRANSMISSION LOSS AND AIR FLOW RESISTANCE MEASUREMENTS ON CONCRETE BLOCK WALLS.
Զգուշացում. այս մեջբերումները միշտ չէ, որ կարող են 100% ճշգրիտ լինել.