report-on-opening-session-of-the-19th-international-montessori-congress-amsterdam-1979-ig7bg7fi Post date May 28, 2023 Tags Conferences, International Montessori Congress (19th, Amsterdam, Netherlands, 9-13 April 1979) ← report-on-the-18th-international-montessori-congress-qj7rab2c → reports-of-national-montessori-societies-and-other-reports-on-the-years-1977-and-1978-5y6ubb69