In some academic disciplines the distinction between a secondary and tertiary source is relative, but in historiography it is absolute. In the UNISIST model, a secondary source is a bibliography, whereas a tertiary source is a synthesis of primary sources.
English Name for Vasambu is Sweet Flag. It is a semi-aquatic perennial herb whose scientific name is Acorus Calamus. In HIndi, it is called Bach. It is also called Bach in Bengali. would like to know the hindi/eng name for taml herb vasambu.
pitambari is the substitute stone of the  yellow saphire yeh ek sanskrit word hai, english mein iska koi bhi naam nahin hai.bahut kam log hi iske baare mein jaante hai.internet par aapko iske baare mein kuch pata nahin chalega, ye kewal aapko kisi astrologer k paas se hi mil sakta hai.