{
	"version": "1.0",
	"cache_age": 3600,
	"type":"rich",
	"title": "Technology diffusion in the coal-mining industry of the USSR ;",
	"url": "https://arl4.library.sk/arl-spu/en/detail-spu_us_cat-0001102-Technology-diffusion-in-the-coalmining-industry-of-the-USSR/"
}