La pierre angulaire ( 1953 )

<svg xmlns="http://www.w3.org/2000/svg" width="25.642" height="24.637" viewBox="0 0 25.642 24.637"><path id="Polygone_132" data-name="Polygone 132" d="M9.888,0l9.888,17.03H0Z" transform="translate(0 9.888) rotate(-30)" fill="#1e1f4d"> Livre de poche

<svg xmlns="http://www.w3.org/2000/svg" width="25.642" height="24.637" viewBox="0 0 25.642 24.637"><path id="Polygone_132" data-name="Polygone 132" d="M9.888,0l9.888,17.03H0Z" transform="translate(0 9.888) rotate(-30)" fill="#1e1f4d"> Livre numérique (HUB)