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CLARKE HJ, 1949, CHEMISTRY PENNICI ED
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CLARKE HT, 1949, CHEMISTRY PENICIL ED, P188
[3]
CLARKE HT, 1949, CHEM PENICILLIN, P158
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CLARKE HT, 1949, CHEM PENICILLINS, P447
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CLARKE HT, 1949, CHEMISTRY PENICILLIN, P977
[8]
SHEEHAN JC, 1957, ORGAINC REACTIONS, V9, P402
[10]
1964, TETRAHEDRON LETTERS, P609