剧情简介：In 1921, when Rudolf Hommel joined Henry Chapman Mercer on his expedition into China, they found a land untouched by the arrival of machine technology. Grain was planted in holes dug with a long-handled conical stone; it was threshed by slashing the stalks against slatted wooden frames. River-mud bricks were pulled across the fields on sleds with rope handles, then used to buil...(展开全部)
作者：R.P. Hommel
出版社：MIT Press
ISBN：9780262580151
