biological anthropology had been considerably changed from beginning to now. from 19th to mid-20th century, the race has been the principal concept in bio-anthropologic researches. since mid-20th, the concept of race replaced with the new subjects. the second half of 20th century can be counted as the transition period for bio-anthropology. the three last decades of 20th century are the decades...

in the netherlands, serious soil investigations were started in the mid-1800s and in the mid-1900s with university courses and the establishment of research institutes soil science rapidly expanded. the dutch and western european society have changed dramatically in the past century from and early industrial society with a dominantly rural and agricultural character to a post-industrial society...

Wheat–cotton double cropping practices on a large scale in cotton belt of the Yellow RiverValley and the Yangtze River Valley in China. Field experiments were conducted to determinethe effects of wheat–cotton double cropping on cotton biomass accumulation and yieldformation during 2011/12 and 2012/13 growing seasons. Two cotton cultivars, Siza 3 (mid–latematurity) and CCRI 50 (early maturity), ...

The dispute between Canada and the United States on line of demarcation water area continental shelf in Beaufort Sea has been ongoing since mid-1970s. proposes to draw this along 141st meridian west longitude, - equidistance principle. In 2000s subject expanded include also extended two countries Arctic. Against backdrop extremely high oil prices late – mid 2010s attempts by resolve intensified...