หมายเลขสื่อ #00005397 Open book closeup with turning pages and magnifying glass.

คำสำคัญ

• glass
• magnifying
• book
• history
• library
• closeup
• dark
• dictionary
• discovery
• document
• เพิ่มเติม
• education
• information
• intelligence
• knowledge
• learning
• lens
• loupe
• magnification
• magnifier
• open
• optical
• page
• research
• research and development
• researcher
• school
• science
• study
• studying
• text
• textbook
• tool
• university
• work
• law
• bible
• black
• bookstore
• concept
• copy space
• desk
• encyclopedia
• handbook
• hard
• literature
• manual
• nobody
• object
• paper
• search