Nature school educational poster "plant multiplication" "the fertilization of a flower" lang

This old educational poster is authentic. She sat enthroned in a class and deals with nature: boards 3 and 4 "plant multiplication" and "the fertilization of a flower". It is a production of “la maison des teachers” by imprimeries georges lang in paris. The table is created by j. Anscombre. This school poster measures approximately 90 X 68 cm. I point out wear and traces of time (stains, torn, folded edges). It is kept rolled up.