BUREAU OF INDIAN S
INDIAN STANDARD CODE OF PRACTICE FOR ACOUSTICAL DESIGN OF AUDITORIUMS AND CONFERENCE HALLS : IS2526-1963 - ND BUREAU OF INDIAN ST 1984
624 / ISI-I
INDIAN STANDARD CODE OF PRACTICE FOR ACOUSTICAL DESIGN OF AUDITORIUMS AND CONFERENCE HALLS : IS2526-1963 - ND BUREAU OF INDIAN ST 1984
624 / ISI-I