Preservation (1) Feeding and feeds (1) Food (1) Conservation (1) Varieties (1) Breeding (1) Genealogy (1) Genealogy (1) Witnesses (1) Wine and wine making (1) Water (1) Tools (1) Swine (1) Silkworms, Non-mulberry (1) Silkworms (1) Sharing (1) Rural-urban migration (1) Raisins (1) Plows (1) Peasants (1) Natural disasters (1) Mechanization (1) Madder (1) Life (1) Landlords (1) Grapes (1) Grain--Harvesting (1) Gardening (1) Frost (1) Discussion (1)