https://bibliotecas.ipb.pt/cgi-bin/koha/opac-search.pl?q=ccl=au%3APeter%20F.%20Drucker%20and%20au%3A%20Drucker%2C%20Peter%20F.%20and%20available&format=rss2 Search results for 'au:Peter F. Drucker and au: Drucker, Peter F. and available' at Bibliotecas do IPB 0 20