TY  - RPRT
TI  - Large space erectable structures - building block structures study
AU  - Armstrong, W. H.
AU  - Skoumal, D. E.
AU  - Straayer, J. W.
PY  - 1977
UR  - https://ntrs.nasa.gov/citations/19770020212
ID  - 19770020212
ER  -