Dark Nebulae B 33 + IC 434 B 150 B 174 LDN 673 LDN 1228 + LBN 552 LDN 1251 LDN 1622 + vdB 62 vdB 149 + vdB 150 vdB 152 + B 175 + DeHt 5 vdB 158 + LBN 534