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METHOD OF MANUFACTURE OF PHENOL-TOLUENE-FORMALDEHYDE,CRESYLIC FORMALDEHYDE AND PHENOL-CRESOL-TOLUENE-FORMALDEHYDE RESINS-FORMAL'DEGIDNYM I GENOL-TOLUOL-FORMAL'DEGIDNYKH SMOL
METHOD OF MANUFACTURE OF PHENOL-TOLUENE-FORMALDEHYDE,CRESYLIC FORMALDEHYDE AND PHENOL-CRESOL-TOLUENE-FORMALDEHYDE RESINS-FORMAL'DEGIDNYM I GENOL-TOLUOL-FORMAL'DEGIDNYKH SMOL