Question: are the following books:JAMI AL MASANEEDMUSNAD IMAM ABU HANIFAKITAB'UL ASAAR (BY IMAM ABU YUSUF)KITAB'UL ASAAR (BY IMAM MUHAMMAD)one and the same book?
Answer: These are different books.
Question: And what is the amount of hadeeth what Imam Abu Hanifahas recorded?
Answer: It is mentioned that he recorded some 40,000. This does not mean he only memorized 40,000 though. Abu Yusuf, who was his student and later became the head of the scholars of his time said he had never met anyone as knowledgeable about hadith in rules and laws of the religion as Abu Hanifa.
Question: And what is the amount of hadeeth which the students of Abu Hanifa have recorded from ABu Hanifa?
Answer: I don't know.
... and Allah knows best.