@article{oai:muroran-it.repo.nii.ac.jp:00007204,
 author = {前野, 良久 and MAENO, Yoshihisa},
 issue = {1},
 journal = {室蘭工業大學研究報告, Memoirs of the Muroran College of Technology},
 month = {Jun},
 note = {application/pdf, This Paper is a statement of the results of the investigator's own experiment made on the piston stroke of CA-7 Type pneumatic-hammerpick which is iufluenced by such things as the compressed air pressure, the strength of various springs,and the primary pressure of the spring of the testing machine. The steeI rod,which is fast attached to the piston,has the same motion as the piston stroke. Therefore the end of the steel rod was reciprocated out of the hammerpick body,of which motion the investigator took a photograph. At the same time he made a searching inquiry into the body-swing of the pick itself.},
 pages = {29--50},
 title = {二ウマチツク・ハンマ・ピックの性能 : ピストン・ストロークの研究},
 volume = {1},
 year = {1950},
 yomi = {マエノ, ヨシヒサ}
}