1. INTRODUCTION  
2. DATA  
2.2. BGPS  
2.3. MGPS90  
3. DATA COMBINATION  
3.1. Preparation of FITS headers  
3.3. Alignment  
3.4. Feathering  
4. ANALYSIS  
4.1. Structure identification  
4.3. Dust contribution  
4.4. Free-free contribution  
5. DISCUSSION  
5.1. Large to Small Scale Efficiencies  
5.2. Evolutionary stages  
6. SUMMARY AND CONCLUSIONS