TY - GEN AU - Paff,G H AU - Boucek,R J AU - Harrell,T C TI - Observations on the development of the electrocardiogram SN - 0003-276X PY - 1968///0913 KW - Animals KW - Blood Circulation KW - physiology KW - Chick Embryo KW - Cholinesterase Inhibitors KW - pharmacology KW - Electrocardiography KW - Heart KW - embryology KW - Heart Block KW - chemically induced KW - In Vitro Techniques KW - Physostigmine N1 - Publication Type: Journal Article UR - https://doi.org/10.1002/ar.1091600306 ER -