1 "Fișier:History_and_biology_of_pear_blight_(IA_historybiologyof00arth).pdf".

Fișier:History and biology of pear blight (IA historybiologyof00arth).pdf

Archive Internet Archive ID: historybiologyof00arth described at URL: https://archive.org/download/historybiologyof00arth/historybiologyof00arth.pdf...