1. INTRODUCTION

2. SOURCE SELECTION

3. OBSERVATIONS

4. RESULTS
4.1. Overall Results
4.2. Notes on Some Individual Sources

5. DISCUSSION
5.1. Detection Rates
5.2. Relative velocities of masers with respect to the ambient gas
5.3. Variability of masers
5.4. The relationship of maser luminosity with bolometric luminosity

6. SUMMARY