Visakhapatnam/Vijaywada, Sept. 14 -- Even as cities in Punjab are struggling to climb the rankings in Swachh Sarvekshan - an annual survey of hygiene, cleanliness and sanitation across India- its partner state under 'Ek Bharat Shreshta Bharat' Andhra Pradesh has set an example with three of its cities featuring in top 10 cleanest cities in the country in the last year's nationwide survey under different categories....