Author not established. Zero School students. Date not established. EHREA archive: /library/documents/doc-df3631641858555d88f5150e/
[1] Zero School students. Original source: http://www.ehrea.org/eplfed.php. Preserved original: /library/originals/5c9a7c388041c1c91e59bd4f691e27546d069ab1e099325d5e5cd2e12bcce782.html. SHA-256: 5c9a7c388041c1c91e59bd4f691e27546d069ab1e099325d5e5cd2e12bcce782