by HEYKANTS JOZEF J P, ROEVENS LEOPOLD FR C, HELSEN WALTER A M
Year of Publication 31.08.1982

by LEOPOLD FR. C. ROEVENS, WALTER A. M. HELSEN, JOSEF J. P. HEYKANTS
Year of Publication 15.04.1982

by HEYKANTS,PIETER J.,BE, VAN PEER,ACHIEL P.,BE, MESENS,JEAN,BE
Year of Publication 29.01.1990

by HEYKANTS,PIETER J.,BE, VAN PEER,ACHIEL P.,BE, MESENS,JEAN,BE
Year of Publication 28.12.1988

by LEOPOLD FR. C. ROEVENS, WALTER A. M. HELSEN, JOSEF J. P. HEYKANTS
Year of Publication 15.09.1977

by ROEVENS; LEOPOLD FR. C, HELSEN; WALTER A. M, HEYKANTS; JOZEF J. P
Year of Publication 26.07.1977

by ROEVENS; LEOPOLD FR. C, HELSEN; WALTER A. M, HEYKANTS; JOZEF J. P
Year of Publication 09.11.1976

by ROEVENS LEOPOLD FR C, HEYKANTS JOSEF J P, HELSEN WALTER A M
Year of Publication 11.09.1976

by WILHELM, DORIS, HEYKANTS, JOZEF J, BORGERS, MARSEL J
Year of Publication 31.07.1996

by HENS,JOZEF F.,BE, HEYKANTS,JOZEF J.,BE, TORREMANS,JOSEPH L.,BE, JANSSENS,FRANS E.,BE
Year of Publication 28.03.1988

by HEYKANTS, JOZEF J, MEULDERMANS, WILLEM EMIEL G, MEGENS, ANTONIUS ADRIAN H, SCHUURKES, JOANNES ADRIANU J
Year of Publication 30.11.2000