Dr. Chasin: 

Office: 912 Fairchild.
Paper mailbox (7th floor of Fairchild): #2433.
Tel. 212-854-4645.
E-mail: lac2@columbia.edu.
Office hours 1-2 Tues and Thurs in 912 Fairchild

Dr. Mowshowitz:

Office: 744D Mudd.
Tel.  212-854-4497.
Paper mailbox (7th floor of Fairchild): #2453.
E-mail: dbm2@columbia.edu.
Office hours 1-2 Tues and Wed and 4-5 Thurs in 744D Mudd.