MY DEAR FRIENDS,
FOB OR CIF CONTRACT BOTH ARE RELATED TO CONTRACT LAW.SEE THE TEXT BOOK OF CONTRACT LAW, CARRIAGE OF GOODS, INTER NATIONAL  SEA CONTRACT AND TRADE LAW.
THE BOOKS OF P S Atiyah, John N Adams, Hector MacQueen, ATIYAH’S SALE OF GOODS, 12edn IS REALLY HELPFUL.
ALSO JOURNAL IN WEST LAW AND LEXIS NEXIS ARE INTERESTING.