छात्र, शिक्षक और शोधकर्ता मुख्य रूप से किस श्रेणी के पुस्तकालयों के उपयोगकर्ता समूह हैं?

Which of the following is an example of a Corporate Library?

Special libraries are primarily established and meant to serve:

Which of the following acts as a school's innovative, mediatory, and pedagogical learning center?