SMACNA., Sheet Metal and Air Conditioning Contractors'National Association The Smacna duct design calculator (metric) / SMACNA, Sheet Metal and Air Conditioning Contractors'National Association

The Smacna duct design calculator (metric) / SMACNA, Sheet Metal and Air Conditioning Contractors'National Association . - Vienna : SMACNA, cop. 1989 . - IX, 7 p. 22 cm
628.8