1977–78 Segunda División B
The 1977–78 Segunda División B was the first season of Segunda División B , the third highest level of the Spanish football league system . 
<triplet> 1977–78 Segunda División B <subj> Segunda División B <obj> sports season of league or competition <triplet> Segunda División B <subj> 1977 <obj> inception <subj> Spanish football league system <obj> part of <triplet> Spanish football league system <subj> Segunda División B <obj> has part