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REFERENCES

  1. Baum, W. A. 1962, Symposium on Problems of Extra-Galactic Research, ed. G. C. McVittie (New York: Macmillan Co.), p. 390.
  2. Code, A. D. 1969, Pub. A.S.P., 81, 475.
  3. Gunn, J. E. 1971, Ap. J. (Letters), 164, L113.
  4. Humason, M. L., Mayall, N. U., and Sandage, A. R. 1956, A.J., 61, 97.
  5. Minkowski, R. 1960, Ap.J., 132, 908.
  6. Oke, J. B. 1965, Ann. Rev. Astr. and Ap., 3, 23.
  7. Oke, J. B. 1969, Pub. A.S.P., 81, 11.
  8. Oke, J. B. 1972, External Galaxies and Quasi-stellar Objects, I.A.U. Symposium No. 44, Uppsala, ed. D. S. Evans, p. 139.
  9. Oke, J. B., and Schild, R. E. 1970, Ap. J., 161, 1015.
  10. Sandage, A. 1961, Ap. J., 134, 916.
  11. Schild, R., and Oke, J. B. 1971, Ap. J., 169, 209.
  12. Schmidt, M. 1965, Ap. J., 141, 1.
  13. Tinsley, B. M. 1968, Ap. J., 151, 547.
  14. Tinsley, B. M., and Spinrad, H. 1971 (preprint).
  15. Whitford, A. E. 1971, Ap. J., 169, 215.
  16. Zwicky, F. 1959, Encyclopedia of Physics, 53, 390.