121
Published 2008
Ministry of Economy, Poland

122
Published 2001
OECD Publishing

123
Published 2011
Wolters Kluwer Polska Sp. z o.o., Poland

124
Published 2007
Central Statistical Office

125
Published 2007
Ministry of Economy, Poland

126
Published 2009
Ministry of Regional Development, Poland

127
Published 2015
Ministry of Labour and Social Policy, Poland

128
by Giżycki, Franciszek Ksawery
Published 1846
J.P. Pillera

129
by Grigorik, Ilya
Published 2014
Helion

130
by Weyl, Estelle
Published 2014
Helion

131
by Lockhart, Andrew
Published 2012
Helion

132
by Barrett, Daniel J.
Published 2012
Helion

133
by Stubblebine, Tony
Published 2012
Helion

134
by McFarland, David Sawyer
Published 2012
Helion

135
by Pogue, David
Published 2012
Helion

136
by Reese, George
Published 2012
Helion

137
by Fitzgerald, Michael
Published 2013
Helion

138
by Chadwick, Jess
Published 2013
Helion

139
by Pagella, Mario Andres
Published 2013
Helion

140
by MacDonald, Matthew
Published 2013
Helion