@misc{notes+on+instruments+best+suited+for+engineering+field+work+in+india+and+the+colonies,
    author = {Bligh, William George},
    title = {Notes on instruments best suited for engineering field-work in India and the colonies},
    address = {London i New York},
    publisher = {E. & F. N. Spon, Ltd. i Spon & Chamberlain},
    date = {1899}
}