Similar to ミミズ堆肥

40 (number)

70 (number)

100

400 (number)

700 (number)

1000 (number)

System of Rice Intensification

Slurry pit

Centre for Alternative Technology

Hügelkultur

Humus

Woodchipper

Composting

Composting toilet

29th century BC

28th century BC

27th century BC

26th century BC

25th century BC

24th century BC

23rd century BC

22nd century BC

20th century BC

19th century BC