Tribal method may help purify ground water
The seeds of the forest tree strychnos potatorum used by the tribals of Andhra Pradesh for purifying water may hold the key to remove arsenic in the ground water of West Bengal and Bangladesh,
The seeds of the forest tree strychnos potatorum used by the tribals of Andhra Pradesh for purifying water may hold the key to remove arsenic in the ground water of West Bengal and Bangladesh,