जंतर-मंतर का निर्माण किसने करवाया था , कब हुआ | Jantar-Mantar was build by whom and when in hindi
know facts of जंतर-मंतर का निर्माण किसने करवाया था , कब हुआ | Jantar-Mantar was build by whom and when in hindi ? question : by whom Jantar-Mantar was constructed…