21. In 1920 the progressive platoon school model was adopted which helped address the school's space problem . 22. To solve severe space problems , many major museums lend portions of their collections to smaller institutions. 23. A similar review began in 1999 in the Southeast region, where museums are also experiencing space problems . 24. This is simply to make sure that when adding more involved content, you don't get space problems . 25. The following proof is taken from Halmos's A Hilbert Space Problem Book ( see the references ). 26. But we have a space problem here. 27. Since this is an online encyclopedia, we do not have the same space problems that print publications have. 28. For instance, we have space problems , 29. However, as years passed by, the gradual increase in number of students began to pose a space problem . 30. Several private schools that have recently completed expansion projects took distinct approaches to dealing with their space problems .
