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Article Contents

ABSTRACT

1.INTRODUCTION

2.DISTRIBUTION AND CENSUS OF IRREGULARS IN THE LOCAL GROUP

3.THE INTERSTELLAR MEDIUM OF LOCAL GROUP IRREGULARS

3.1.The Magellanic Clouds

3.2.More Distant Dwarf Irregular Galaxies

4.LARGE-SCALE STAR FORMATION AND SPATIAL VARIATIONS

4.1.Large-scale Star Formation

4.2.Intermediate-age and Old Stellar Populations

4.3.Modes of Star Formation

5.METALLICITY AND AGE

5.1.Young Populations and Chemical Homogeneity

5.2.Intermediate-age/Old Populations and Chemical Inhomogeneity

5.3.Individual Element Abundances and Ratios

5.4.Age-metallicity Relations

6.OTHER GLOBAL CORRELATIONS

6.1.GAS AND ENVIRONMENT

6.2.LUMINOSITY AND METALLICITY

7.SUMMARY

REFERENCES