TY  - RPRT
TI  - Roentgenographic bone density changes in astronauts during representative Apollo space flight.
AU  - P B Mack
AU  - F B Vogt
PY  - 1971
DO  - 10.2214/ajr.113.4.621
UR  - https://pubmed.ncbi.nlm.nih.gov/5128124/
ID  - 5128124
ER  -