electrometrische bepaling van de waterstofionenconcentratie in de latex van Hevea brasiliensis
Subtitle: en hare toepassing op technische vraagstukken.  The electrometric determination of the hydrogen ion concentration in the latex of Hevea brasiliensis and its applicability to technical problems
By: door Nicolaas Hendrik van Harpen.
Publisher: Varekamp & co.
Published: 1930
Place of publication: Medan
Language: dut
Number of pages: 458
Subjects: Latex.; Hydrogen-ion concentration.
Notes: Text in English with Dutch prefatory note.  Half-title and coveri-title in English.

"Stellingen": 4 p. laid in.

Proefschrift--Delft.