TY - GEN AU - STEPANENKO,B N TI - [Works of M. V. Nentskii on chemistry of pyrrole pigments] SN - 0130-7371 PY - 2003///0501 KW - Biological Products KW - History KW - Pigments, Biological KW - Pyrroles KW - Work N1 - Publication Type: Biography; Journal Article ER -