Seventeenth and Eighteenth Puranam and Upa puranam Vayu

The seveenteenth puranam is Sri Koorma Puranam
This puranam has 4 parts ie Brahmi,bhaagavathi, Gauri, vaishanavi. Out of this only Brahmi was got.Remaining not traceble.This puranam is describes about raesons for the Koorma Avataram.
It also tells Neelakantan ,who got what from Milk Ocesan, Kautama Rishi story,,Jayathujwan,Shiva' sAvtaram (2 8 Avatarams ie swetha,sudhara,madhanan,sugendran,kanganan,lokashi,jai kishgvyan,thathivakan,rishaban,birugu,ukkran,atthri,bali,gauthaman,vedashirshan,kokarnan,shikandhadan,jadamali,attahasan,
tharugan,lankali,mahayaman,muni,shuli,pindamuniswaran,sahishisnu,somasarma,naguliswaran),
Eswara Geetha,Gayatri mantra,,details of some vrathams,Nadhi deva etc
The eighteenth Puranam is Sri Bramanda Puranam, This has got 71 chapters.
the length bet two end of fingers (Thump end to small finger end) is one vithasthi.this equals to 12 ankuli. 20 ankuli = one rathni, 20 rathni= one dhanu, 8000 dhanu = one yojanai
It informs aboutYoga,bad omens, Karpangal ( Now It is varaha Kalpam ) Up to now 33 kalpams have completed
Bala, buva,subha,Bhava,ramba,rithu,kirathu,vanhi,Havyavahana,savithra,puva,ushika,kushika,kandra,rishaba,vidaja,marjiyalya,madhyama,vairajaka,nishatha,
panchama,megavahana,slndhaka,aaguthi,vijnadhi,mana,bava,virihath,sivethalokitha,raktha,pithavasa,seetha,visvarupa, now varahakalpa
Name of 28 Vedha vysa is told . Now this vaivaswara manvanthram The creation of world and its description,science,stories of shiva,Vali-ravana war,parasuram any many more are described
LastlySri Vayu Puranam
this informs about creation of world,Yugham,Works of gods,Regarding Astanga Yoga ,Shiva's names,guards of 8 sides,Yagnavalyar story,Balaramar marriage,Soman life,varanashi,Raji becomes Indra for someperiod,Gayasuran story,and Importance of gaya.

All puranams are guidelines for eternal happiness of mankind. It teaches how to lead life and devotes ourself. each puranams are written by different authors at different times and there many repetion of events as seen by their invisible knowledge and their extraordinary vision. Their main and only aim is lifting the humankind to invisible height. We are bowing our haeds to them.

My humble request for any mistake Iam responsible please correct me.