Need 2nd year engg textbooks fast!

[LuxCars]

I NEED 2ND YEAR TEXTBOOKS.

hahaha, they are so expensive this year, looking at $970 for the semester, its ridiculous.

if anyone has any that would be really helpful.

i am a mechanical engineering student, and my friend is in chemical engineering and we could really use some help.

I already bought my organic chem book (172.95 and the solutions manual is 68.95!!!)

I have mechanics of materials (third edition in si units) but i need the 4th edition so if anyone has it that would be great.

I have fluid mechanics fifth edition but i need the 6th edition if anyone has it.

I also really need:

Thermodynamics 6th edition
Numerical Methods 5th edition


so if anyone can help me out that would be greatly appreaciated, and i need them pretty soon cause we already have assignments and required readings for a quiz.

my friend in chem needs mostly all the chem books, dont know the editions, but he is taking thermo, ochem, mechanics of materials and some chem engg classes.

please let me know a.s.ap.

thank you to all in advance.
(please try and respond by pm, i answer better to those)