@article {7553, title = {Note sur les Monsonia (Geraniaceae) adventices en Belgique}, journal = {Dumortiera}, volume = {14-15}, year = {1979}, month = {1979///}, pages = {62 - 63}, author = {Lawalr{\'e}e, A.} } @article {7554, title = {Les Echinops de Belgique}, journal = {Dumortiera}, volume = {12}, year = {1979}, month = {1979///}, pages = {14 - 15}, author = {Lawalr{\'e}e, A. and Wechuysen, R.} }