বিষয়গুলি: “...Zeitschrift. swd...”
Available in Education Source.

বিষয়গুলি: “...Zeitschrift gnd...”
Full text available from ABI/INFORM Global: 02/01/2001 to 06/30/2007
Full text available from Advanced Technologies & Aerospace Database: 02/01/2001 to 06/30/2007