2019 . 67 - Masa Madre de Cultivo Natural (Escuela Richemont)[pdfjs-viewer url="https://www.gremipabcn.com/wp-content/uploads/2023/02/67.-Massa-mare-cultiu-naural-Escola-Richemont-28.11.19-1.pdf" fullscreen=false download=false print=true zoom=page-fit]