Danh mục sản phả̂m nghiên cứu khoa học.
Publisher: Viện khoa học giáo dục
Published: 2001
Place of publication: Hà Nội
Language: vie
Number of pages: 479
Notes: At head of title: Bộ giáo dục và đào tạo. Viện khoa học giáo dục.