Published in 1978.

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Table of Contents

• INTRODUCTION
• THE REALM OF THE SPECIMENS
• THE NATURE OF THE THIRD DIMENSION
• THE SUI GENERIS STANDARDS
• THE DEGREE OF INCOMPLETENESS OF THE MAT ATLAS MORPHOLOGY
• SPECTRAL CLASSIFICATION IN GLOBULAR CLUSTERS AND IN GALAXIES
• A NOTE ON CLASSIFICATION IN THE SATELLITE ULTRAVIOLET
• CONCLUSION
• NOTES ON ATLAS PLATES
• PLATES