John R. Gregg, Louis A. Leslie & Charles E. Zoubek.
Gregg speed building simplified.
R646591. Gregg speed building simplified. By John R. Gregg, Louis A. Leslie & Charles E. Zoubek. © 14Nov49; A36803. Louis A. Leslie & Charles E. Zoubek (A); 19Nov76; R646591.
Louis A. Leslie & Charles E. Zoubek|A