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Article Contents

ABSTRACT

1.INTRODUCTION

2.DEFINING THE EMGs
2.1.Luminosities: Basic Relations
2.2.From CO Luminosity to Molecular Mass
2.3.Classification of the EMGs
2.4.Examples of EMGs

3.DISCUSSION
3.1.Molecular Gas Mass and Star Formation Efficiency
3.2.Star Formation and Gas Depletion Lifetime
3.3.HCN, [CI], & [CII] Emission
3.4.Masses, Sizes, & Evolutionary Destiny

4.OBSERVATIONAL PROSPECTS

REFERENCES