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	1.		Encyclopedia of information systems and services, 1983 by Schmittroth, John (Ed.) Edition: 5th ed. Material type: Text; Format: print ; Literary form: Not fiction Publication details: Detroit: Gale Research Company, 1983 Availability: Items available for reference: National Science Library: Not for loan (1)Call number: D 002.61(71+73) L1;M2. Add to cart (remove)
	2.		Encyclopedia of information systems and services by Kruzas, Anthony T (Ed.) Schmittroth, John (Ed.) Edition: 4th ed. Material type: Text; Format: print ; Literary form: Not fiction Publication details: Detroit: Gale Research Company, 1981 Availability: Items available for reference: National Science Library: Not for loan (2)Call number: D 002.61(71-73) L1;M1, ... Add to cart (remove)
	3.		Encyclopedia of information systems and services 1985-86 by Schmittroth, John (Ed.) Edition: 6th ed. Material type: Text; Format: print ; Literary form: Not fiction Publication details: Detroit: Gale Research Company, 1985 Availability: Items available for reference: National Science Library: Not for loan (2)Call number: D 002.61(71+73) L1;M51-2, ... Add to cart (remove)
	4.		New information systems and services: A periodic supplement to the fifth edition of encyclopedia of information systems and services by Schmittroth, John (Ed.) Material type: Text; Format: print ; Literary form: Not fiction Publication details: Detroit: Gale Research Company, 1984 Availability: Items available for reference: National Science Library: Not for loan (2)Call number: D 002.61(71+73) L1;M2, ... Add to cart (remove)
	5.		New information systems and services: A periodic supplement to the sixth edition of encyclopedia of information systems and services by Schmittroth, John (Ed.) Material type: Text; Format: print ; Literary form: Not fiction Publication details: Detroit: Gale Research Company, 1985 Availability: Items available for reference: National Science Library: Not for loan (2)Call number: D 002.61(71+73) L1;M51-1, ... Add to cart (remove)