Vaccine research began as early as 1900, but all attempts failed . After several ... The problem was easily fixed, and the vaccine was pronounced safe . In 1957 ... Teacher Created Resources, Inc. #8237 Read ac Write acRespond (JanuaryaJune) anbsp;...
|Title||:||Read Write Respond Using Historic Events January - June, Grades 4-6|
|Author||:||Jimmie Aydelott, Dianna Buck|
|Publisher||:||Teacher Created Resources - 2007-01-10|