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Results for Learning to Cross801–900 of 7947
by Pearl Tsai, Carl de Marcken, and David Baggett
1994
by Peter Jones, Trevor Lever, and Valerie Saunders
1986
by Jason Somerville and Fergus McNeill
1987
by Bruce MacKay and Marlene Abriel
1987
by Michael White and Nigel Brooks
1987
by Harel Malka, Ran Kramer, and Anne Jalijali
1995
by Mike DeSanto and Johannes Steingraeber
1996