GRO'P04 UG/6139 UG/6140 UG/6141 Groth, David A+ complete : study guide / David Groth. – 3rd ed. – New Delhi : BPH Publications, 2004 (2006 reprint) xlix, 922p. : ill., palt ISBN8176568325 : Rs.450/- . Computer technicians – Certification – Study guides. |