TY - BOOK ID - 140706224 TI - Graphs and the child AU - Papy, Georges AU - Papy-Lenger, Frédérique AU - Incolle, Danielle PY - 1970 PB - Montreal Algonquin Publishing, Education nouvelle DB - UniCat KW - Sciences pures KW - Zuivere wetenschappen KW - 51 (07) UR - https://www.unicat.be/uniCat?func=search&query=sysid:140706224 AB - ER -