allow me to explain this was years ago and at that time there were few content related to bangladesh on wikipedia however we had a nationally funded encyclopedia banglapedia published by the asiatic society of bangladesh back in i initiated a discussion with asiatic society to get their content released to wikipedia under gfdl as these talks were going on i had seeded a few articles from text from banglapedia and had then paraphrased or rewrote the text in my own words and cited back to the corresponding banglapedia article as reference if you look at the evolution of several articles not the ones listed above you can see the workflow however for some articles it seems that i have missed paraphrasing or rewriting them if you are looking to identify more of such possible articles i suggest you look at the ones written in summer timeframe i will do my own search and actively assist in rewriting the articles to remove copyright issues thanks