1. Observations of the Venus water vapor line at 8197 Å over the disk of Venus;Barker;Bull. Am. Astron. Soc.,1973
2. Ground-based observations of Mars and Venus water vapor during 1972 and 1973;Barker,1974
3. Semi-periodic variations in the CO2 abundance on Venus;Barker;Bull. Am. Astron. Soc.,1974
4. Comparison of simultaneous CO2 and H2O observations of Venus;Barker;J. Atmos. Sci.,1975
5. Semi-periodic variations in the CO2 abundance on Venus;Barker;J. Atmos. Sci.,1974