00299nam a22001097a 4500003000400000008004100004082001600045100002600061245005200087260004200139300000800181OSt240216b        |||||||| |||| 00| 0 eng d  a155.4bH95D  aHurlock, Elizabeth B.  aDevelopmental psychology : a life span approach  TTata McGrow hill Publishing Co.c1980  a477