[ON DEFECTS IN INDUSTRIAL PHASE CONTRAST EQUIPMENT AND METHODS FOR THEIR CORRECTION].
D004864:Equipment and Supplies; D006801:Humans; D008853:Microscopy; D008858:Microscopy, Phase-Contrast
EQUIPMENT AND SUPPLIES; MICROSCOPY, PHASE CONTRAST
O NEDOSTATKAKH PROMYSHLENNYKH FAZOVOKONTRASTNYKH USTRO ISTV I PUTIAKH IKH  USTRANENIIA.