1. INTRODUCTION  
2. OH MEGAMASERS IN LADUMA  
2.1. The OH Luminosity Function  
2.2. Volume of LADUMA Field  
2.3. Sensitivity of LADUMA  
2.4. Dependence on the Major Merger Rate  
2.5. MCMC Calculation of N(OH)  
4. IDENTIFYING OH MEGAMASERS IN UNTARGETED H I SURVEYS  
4.1. Creating OH and H I Models for Distinguishing Populations  
4.2. Machine Learning to Distinguish OH from H I  
5. DISCUSSION  
6. CONCLUSIONS