00279nam a2200109Ia 4500008004100000082001500041100002100056245003400077260003900111300000900150650001000159140113s9999    xx            000 0 und d  a576.858 L8  a"Mandahar, C. L"  aIntroduction to plant viruses  b"New Delhi : S. Chand & company, "  a333p  aVirus