Code of Practice for Design of Shipboard Mechanical Ventilation Trunking - New Delhi : Indian Standards Institution, 1969 - 31 p. : ill. ; 21 cm. - Indian Standard ; IS 4881 : 1968 . ISBN: Rs. 340.00 Subjects--Topical Terms: Ships--Heating and ventilation--Standards Dewey Class. No.: 623.853 / IS4881:1968