VARIATION OF NITROGEN ABUNDANCE AMONG POPULATION II OBJECTS

[11] 5-COLOR INTERMEDIATE-BAND PHOTOMETRY OF STARS CLUSTERS AND GALAXIES [J]. ASTRONOMICAL JOURNAL, 1968, 73 (5P1) : 313 - &

[12] CYANOGEN ABSORPTION IN NUCLEI OF GALAXIES [J]. ASTRONOMICAL JOURNAL, 1969, 74 (01) : 50 - &

[13] THE INTEGRATED SPECTRA OF GLOBULAR CLUSTERS [J]. ASTRONOMICAL JOURNAL, 1959, 64 (10) : 432 - 436

[14] OSBORN W, 1971, OBSERVATORY, V91, P223

[15] OSBORN W, 1971, THESIS YALE U

[16] OSBORN WH, 1971, 50 IAU S

[17] PAGEL BEJ, 1970, Q J ROY ASTRON SOC, V11, P172

[18] PEIMBERT M, 1970, ASTRON ASTROPHYS, V7, P311

[19] METAL-POOR STARS .2. INITIAL HORIZONTAL-BRANCH MODELS [J]. ASTROPHYSICAL JOURNAL, 1970, 161 (01) : 145 - &

[20] ANOMALOUS COLOR-MAGNITUDE DIAGRAM OF REMOTE GLOBULAR CLUSTER NGC 7006 [J]. ASTROPHYSICAL JOURNAL, 1967, 150 (2P1) : 469 - &

[11] 5-COLOR INTERMEDIATE-BAND PHOTOMETRY OF STARS CLUSTERS AND GALAXIES [J]. ASTRONOMICAL JOURNAL, 1968, 73 (5P1) : 313 - &

[12] CYANOGEN ABSORPTION IN NUCLEI OF GALAXIES [J]. ASTRONOMICAL JOURNAL, 1969, 74 (01) : 50 - &

[13] THE INTEGRATED SPECTRA OF GLOBULAR CLUSTERS [J]. ASTRONOMICAL JOURNAL, 1959, 64 (10) : 432 - 436

[14] OSBORN W, 1971, OBSERVATORY, V91, P223

[15] OSBORN W, 1971, THESIS YALE U

[16] OSBORN WH, 1971, 50 IAU S

[17] PAGEL BEJ, 1970, Q J ROY ASTRON SOC, V11, P172

[18] PEIMBERT M, 1970, ASTRON ASTROPHYS, V7, P311

[19] METAL-POOR STARS .2. INITIAL HORIZONTAL-BRANCH MODELS [J]. ASTROPHYSICAL JOURNAL, 1970, 161 (01) : 145 - &

[20] ANOMALOUS COLOR-MAGNITUDE DIAGRAM OF REMOTE GLOBULAR CLUSTER NGC 7006 [J]. ASTROPHYSICAL JOURNAL, 1967, 150 (2P1) : 469 - &