Helicoidal stair case study / by A. R. Cusens and Supachai -Trirojna.
Cusens, A. R.
Helicoidal stair case study / by A. R. Cusens and Supachai -Trirojna. - Bangkok, [Tailandia] : SEATO, Graduate School of Engineering - [14] p. - Reprint; No. 5 .
Helicoidal stair case study / by A. R. Cusens and Supachai -Trirojna. - Bangkok, [Tailandia] : SEATO, Graduate School of Engineering - [14] p. - Reprint; No. 5 .