author = { Werthamer-Larsson, Lisa AND Kellam, Sheppard AND Wheeler, Leonard },

title = { Effect of first‐grade classroom environment on shy behavior, aggressive behavior, and concentration problems },

publisher = {Wiley},

isbn = {0091-0562},

isbn = {1573-2770},

keywords = { Public Health, Environmental and Occupational Health , Applied Psychology , Health (social science) },

year = {1991},

url = { http://slubdd.de/katalog?TN_libero_mab2 }