Monopoly, perfect competition and market concentration

Thanks to tutor2u for these presentations
Monopoly
http://www.tutor2u.net/economics/reference/monopoly-revision-presentation?utm_medium=email&utm_campaign=Economics%20daily%20digest%20Mon%2018th%20January%202016&utm_content=Economics%20daily%20digest%20Mon%2018th%20January%202016+CID_52339124241b43bb8c1d898ce6fa12e2&utm_source=CampMonitor&utm_term=Monopoly%20Study%20presentations%20This%20is%20an%20updated%20revision%20presentation%20on%20the%20economics%20of%20monopoly%20power%20in%20markets
Perfect competition
http://www.tutor2u.net/economics/reference/perfect-competition-revision-presentation?utm_medium=email&utm_campaign=Economics%20daily%20digest%20Mon%2018th%20January%202016&utm_content=Economics%20daily%20digest%20Mon%2018th%20January%202016+CID_52339124241b43bb8c1d898ce6fa12e2&utm_source=CampMonitor&utm_term=Perfect%20Competition%20Study%20presentations%20This%20is%20an%20updated%20revision%20presentation%20on%20the%20economics%20of%20the%20market%20structure%20known%20as%20Perfect%20Competition
Market concentration
http://www.tutor2u.net/economics/reference/market-concentration-revision-presentation?utm_medium=email&utm_campaign=Economics%20daily%20digest%20Mon%2018th%20January%202016&utm_content=Economics%20daily%20digest%20Mon%2018th%20January%202016+CID_52339124241b43bb8c1d898ce6fa12e2&utm_source=CampMonitor&utm_term=Market%20Concentration%20Study%20presentations%20This%20is%20an%20updated%20revision%20presentation%20on%20how%20we%20measure%20market%20concentration%20and%20market%20power