TY - RPRT TI - New method for large-scale preparation of covalently closed lambda DNA molecules. AU - R Reuben AU - M Gefter AU - L Enquist AU - A Skalka PY - 1974 DO - 10.1128/jvi.14.5.1104-1107.1974 UR - https://pubmed.ncbi.nlm.nih.gov/4610176/ ID - 4610176 ER -