Hydroponics and its role in Urban Agriculture
Dr. Banarsi Lal
In 1950 the total population of world was 2.6 billion with 800 million in urban centres and 1.8 billion in rural areas. After 100 years e.i. by 2050 we expect 9.2 billion inhabitants with 6.3 billion living in urban!-->!-->!-->…
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