IS:216-1961. Indian standard specification for coal tar pitch.
Indian Standards Institution[ISI]
IS:216-1961. Indian standard specification for coal tar pitch. - New Delhi Indian Standards Institution 1961 - 4p.
ENG
IS CODE / I.S.I
IS:216-1961. Indian standard specification for coal tar pitch. - New Delhi Indian Standards Institution 1961 - 4p.
ENG
IS CODE / I.S.I